diff --git "a/38\345\274\240\345\205\210\346\235\260/.keep" "b/38\345\274\240\345\205\210\346\235\260/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/38\345\274\240\345\205\210\346\235\260/\344\275\234\344\270\232/2022-10-27\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.html" "b/38\345\274\240\345\205\210\346\235\260/\344\275\234\344\270\232/2022-10-27\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.html"
new file mode 100644
index 0000000000000000000000000000000000000000..b9f88ce51541f3d1d38ed30b8d095114aeea089a
--- /dev/null
+++ "b/38\345\274\240\345\205\210\346\235\260/\344\275\234\344\270\232/2022-10-27\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.html"
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+ Document
+
+
+
+
+
+
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-14-js\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-14-js\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.md"
index 21c869b3327ef57c04d18175eaba79c0eb1525d9..a185625de8da6145f4a96545d238fc7de835de96 100644
--- "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-14-js\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.md"
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-14-js\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.md"
@@ -1,22 +1,22 @@
-| 1.Switch | | |
-| -------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| | [2](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_2) | 2.基本数据类型： number , boolean, string, null , undefined |
-| | [3](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_3) | var a = '5'+1 // + 其中有一个是字符串， 默认是字符串的连接 |
-| | [4](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_4) | var a = '5' // |
-| | [5](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_5) | var b = a**2 // + - ** 、 %隐式类型转化 |
-| | [6](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_6) | var b = -a |
-| | [7](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_7) | console.log('类型:' + typeof b + '值：' + b);//查看数据是什么类型 |
-| | [8](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_8) | 3.显示数据类型 |
-| | [9](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_9) | NaN : 非数 number |
-| | [10](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_10) | Number():转换成数字，失败会变成 NaN |
-| | [11](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_11) | false:0 true:1 null:0 undefined:NaN |
-| | [12](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_12) | |
-| | [13](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_13) | parseInt(a,radix): 将（radix）进制 转成 10进制 |
-| | [14](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_14) | //var a = 'F' //-->0 1 2 3 4 5 6 7 8 9 A B C D E F |
-| | [15](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_15) | //var b = parseInt(a,16) |
-| | [16](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_16) | |
-| | [17](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_17) | String():转成字符串 |
-| | [18](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_18) | toFixed(n):保留小数点后n位 |
-| | [19](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_19) | a.toString(radix):将十进制数的a转换成radix进制的数 |
-| | [20](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_20) | isNaN(): 是不是非数，是数字的话--》false 不是数字--》true |
-| | [21](https://gitee.com/level-21-software-class-4/java-script/pulls/13/files#92235d944c8d200216d53b115a72c0ed911dfc34_0_21) | Math: 舍入 ceil(向上取整) floor(向下取整) round(四舍五入) |
\ No newline at end of file
+| 1.Switch | |
+| -------- | ------------------------------------------------------------ |
+| | 2.基本数据类型： number , boolean, string, null , undefined |
+| | var a = '5'+1 // + 其中有一个是字符串， 默认是字符串的连接 |
+| | var a = '5' // |
+| | var b = a**2 // + - ** 、 %隐式类型转化 |
+| | var b = -a |
+| | console.log('类型:' + typeof b + '值：' + b);//查看数据是什么类型 |
+| | 3.显示数据类型 |
+| | NaN : 非数 number |
+| | Number():转换成数字，失败会变成 NaN |
+| | false:0 true:1 null:0 undefined:NaN |
+| | |
+| | parseInt(a,radix): 将（radix）进制 转成 10进制 |
+| | //var a = 'F' //-->0 1 2 3 4 5 6 7 8 9 A B C D E F |
+| | //var b = parseInt(a,16) |
+| | |
+| | String():转成字符串 |
+| | toFixed(n):保留小数点后n位 |
+| | a.toString(radix):将十进制数的a转换成radix进制的数 |
+| | isNaN(): 是不是非数，是数字的话--》false 不是数字--》true |
+| | Math: 舍入 ceil(向上取整) floor(向下取整) round(四舍五入) |
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-20\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-20\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232.md"
index 05d54f59f31e68f4b841895bf90ff4d4e4bdd505..a5a138c2195ea869e9abf6423b39527cca076c56 100644
--- "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-20\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232.md"
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-20\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232.md"
@@ -1,83 +1,83 @@
-| 数组: | | |
-| ----- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| | [2](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_2) | concat:连接,数组合并 |
-| | [3](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_3) | 例子: |
-| | [4](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_4) | const arr = [1,2,3] |
-| | [5](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_5) | const arr1 = [4,5,6] |
-| | [6](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_6) | console.log(arr1); |
-| | [7](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_7) | join:将数组转成字符串] |
-| | [8](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_8) | forEach(遍历数组) |
-| | [9](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_9) | 例子: |
-| | [10](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_10) | arr.forEach( |
-| | [11](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_11) | |
-| | [12](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_12) | function (element){ |
-| | [13](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_13) | console.log(element); |
-| | [14](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_14) | } |
-| | [15](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_15) | ) |
-| | [16](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_16) | 映射方法map() |
-| | [17](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_17) | 例: |
-| | [18](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_18) | const arr=[1, 2, 3, 4, 5, 6] |
-| | [19](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_19) | const arr1 = arr.map( |
-| | [20](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_20) | function (element) { |
-| | [21](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_21) | return element + 1 |
-| | [22](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_22) | } |
-| | [23](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_23) | ) |
-| | [24](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_24) | |
-| | [25](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_25) | 将数组的单词全转为大写 |
-| | [26](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_26) | 例: |
-| | [27](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_27) | const countries = ['Finland', 'Sweden', 'Norway', 'Denmark', 'Iceland'] |
-| | [28](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_28) | const new_countries = countries.map( |
-| | [29](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_29) | function (e){ |
-| | [30](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_30) | return e.toUpperCase() |
-| | [31](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_31) | } |
-| | [32](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_32) | ) |
-| | [33](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_33) | filter过滤:返回数组中符合条件的数据 |
-| | [34](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_34) | 例: |
-| | [35](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_35) | const new_arr = arr.filter( |
-| | [36](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_36) | function (e){ |
-| | [37](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_37) | return e%2==0 //true：返回 false：不符合条件=>过滤 |
-| | [38](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_38) | } |
-| | [39](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_39) | ) |
-| | [40](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_40) | |
-| | [41](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_41) | reduce(),reduceRight():归纳汇总： 返回一个总数据 |
-| | [42](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_42) | 例: |
-| | [43](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_43) | const arr = [1, 2, 3, 4, 5, 6] |
-| | [44](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_44) | var sum = arr.reduceRight( |
-| | [45](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_45) | function (v1,v2){ |
-| | [46](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_46) | return v1*v2 |
-| | [47](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_47) | } |
-| | [48](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_48) | ) |
-| | [49](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_49) | |
-| | [50](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_50) | every():只要有一个false，返回 |
-| | [51](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_51) | 例: |
-| | [52](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_52) | some() |
-| | [53](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_53) | var isMatch = arr.every( |
-| | [54](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_54) | function (e){ |
-| | [55](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_55) | return e>1 |
-| | [56](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_56) | } |
-| | [57](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_57) | ) |
-| | [58](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_58) | |
-| | [59](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_59) | var isMatch = arr.some( |
-| | [60](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_60) | function (e){ |
-| | [61](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_61) | return e==6 |
-| | [62](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_62) | } |
-| | [63](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_63) | ) |
-| | [64](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_64) | |
-| | [65](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_65) | 二维数组 |
-| | [66](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_66) | const arrayOfArray = [[1, 2, 3], [4, 5, 6]] |
-| | [67](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_67) | 增删改查 |
-| | [68](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_68) | console.log(arrayOfArray[1][1]); |
-| | [69](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_69) | |
-| | [70](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_70) | 删 |
-| | [71](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_71) | arrayOfArray[1].splice(1,1) |
-| | [72](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_72) | console.log(arrayOfArray); |
-| | [73](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_73) | 函数 |
-| | [74](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_74) | 带参(形参) |
-| | [75](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_75) | undefined:变量声明了但没有赋值 |
-| | [76](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_76) | null:变量声明，并且有个空引用 |
-| | [77](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_77) | ...args:剩余运算符,将剩下的参数都放进args数组中 |
-| | [78](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_78) | function fn(A,B,...args){ |
-| | [79](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_79) | rguments:伪数组 |
-| | [80](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_80) | for (let index = 0; index < arguments.length; index++) { |
-| | [81](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_81) | console.log(arguments[index]); |
-| | [82](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#7dfbb5f92d49bd56a2732ccddaa804aca324b6f7_0_82) | } |
\ No newline at end of file
+| 数组: | |
+| ----- | ------------------------------------------------------------ |
+| | concat:连接,数组合并 |
+| | 例子: |
+| | const arr = [1,2,3] |
+| | const arr1 = [4,5,6] |
+| | console.log(arr1); |
+| | join:将数组转成字符串] |
+| | forEach(遍历数组) |
+| | 例子: |
+| | arr.forEach( |
+| | |
+| | function (element){ |
+| | console.log(element); |
+| | } |
+| | ) |
+| | 映射方法map() |
+| | 例: |
+| | const arr=[1, 2, 3, 4, 5, 6] |
+| | const arr1 = arr.map( |
+| | function (element) { |
+| | return element + 1 |
+| | } |
+| | ) |
+| | |
+| | 将数组的单词全转为大写 |
+| | 例: |
+| | const countries = ['Finland', 'Sweden', 'Norway', 'Denmark', 'Iceland'] |
+| | const new_countries = countries.map( |
+| | function (e){ |
+| | return e.toUpperCase() |
+| | } |
+| | ) |
+| | filter过滤:返回数组中符合条件的数据 |
+| | 例: |
+| | const new_arr = arr.filter( |
+| | function (e){ |
+| | return e%2==0 //true：返回 false：不符合条件=>过滤 |
+| | } |
+| | ) |
+| | |
+| | reduce(),reduceRight():归纳汇总： 返回一个总数据 |
+| | 例: |
+| | const arr = [1, 2, 3, 4, 5, 6] |
+| | var sum = arr.reduceRight( |
+| | function (v1,v2){ |
+| | return v1*v2 |
+| | } |
+| | ) |
+| | |
+| | every():只要有一个false，返回 |
+| | 例: |
+| | some() |
+| | var isMatch = arr.every( |
+| | function (e){ |
+| | return e>1 |
+| | } |
+| | ) |
+| | |
+| | var isMatch = arr.some( |
+| | function (e){ |
+| | return e==6 |
+| | } |
+| | ) |
+| | |
+| | 二维数组 |
+| | const arrayOfArray = [[1, 2, 3], [4, 5, 6]] |
+| | 增删改查 |
+| | console.log(arrayOfArray[1][1]); |
+| | |
+| | 删 |
+| | arrayOfArray[1].splice(1,1) |
+| | console.log(arrayOfArray); |
+| | 函数 |
+| | 带参(形参) |
+| | undefined:变量声明了但没有赋值 |
+| | null:变量声明，并且有个空引用 |
+| | ...args:剩余运算符,将剩下的参数都放进args数组中 |
+| | function fn(A,B,...args){ |
+| | rguments:伪数组 |
+| | for (let index = 0; index < arguments.length; index++) { |
+| | console.log(arguments[index]); |
+| | } |
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-24js\347\254\254\345\205\255\346\254\241\344\275\234\344\270\232.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-24js\347\254\254\345\205\255\346\254\241\344\275\234\344\270\232.md"
index 3b6b9dcd2bec0e096f2a67486b330c98d0be5425..7848fcbb129eda1c81fcac3f288a33d843bf4238 100644
--- "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-24js\347\254\254\345\205\255\346\254\241\344\275\234\344\270\232.md"
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-24js\347\254\254\345\205\255\346\254\241\344\275\234\344\270\232.md"
@@ -1,43 +1,43 @@
-| 6、对象 | | |
-| ------- | ------------------------------------------------------------ | ---------------------------------------------------------- |
-| | [2](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_2) | |
-| | [3](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_3) | ## 6.1 定义对象 |
-| | [4](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_4) | |
-| | [5](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_5) | 字面量 |
-| | [6](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_6) | |
-| | [7](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_7) | var obj = { |
-| | [8](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_8) | name:value; |
-| | [9](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_9) | 'String':value; |
-| | [10](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_10) | } |
-| | [11](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_11) | |
-| | [12](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_12) | 构造函数 |
-| | [13](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_13) | |
-| | [14](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_14) | function GetName() { |
-| | [15](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_15) | this.name = values; |
-| | [16](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_16) | this.age = values; |
-| | [17](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_17) | } |
-| | [18](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_18) | |
-| | [19](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_19) | 工厂模式（设计模式） |
-| | [20](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_20) | |
-| | [21](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_21) | function GetValues(name,age) { |
-| | [22](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_22) | var that = { } |
-| | [23](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_23) | that.name = name |
-| | [24](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_24) | that.age = age |
-| | [25](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_25) | return that |
-| | [26](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_26) | } |
-| | [27](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_27) | |
-| | [28](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_28) | 生成对象 |
-| | [29](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_29) | |
-| | [30](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_30) | var obj = new obj(); |
-| | [31](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_31) | |
-| | [32](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_32) | ## 6.2 增删查 |
-| | [33](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_33) | |
-| | [34](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_34) | 查：obj.name |
-| | [35](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_35) | |
-| | [36](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_36) | 增：obj.原来obj中没有的属性，相当于将该属性添加到对象obj中 |
-| | [37](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_37) | |
-| | [38](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_38) | 删：delete 一般删之前要对该属性进行判断 |
-| | [39](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_39) | |
-| | [40](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_40) | ## 6.3 对象解构 |
-| | [41](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_41) | |
-| | [42](https://gitee.com/level-21-software-class-4/java-script/pulls/124/files#e7b817a3809f75036f44b7bee8d0e90848b09a21_0_42) | let{name:personName, age:personAge} = obj（取别名） |
\ No newline at end of file
+| 6、对象 | |
+| ------- | ---------------------------------------------------------- |
+| | |
+| | ## 6.1 定义对象 |
+| | |
+| | 字面量 |
+| | |
+| | var obj = { |
+| | name:value; |
+| | 'String':value; |
+| | } |
+| | |
+| | 构造函数 |
+| | |
+| | function GetName() { |
+| | this.name = values; |
+| | this.age = values; |
+| | } |
+| | |
+| | 工厂模式（设计模式） |
+| | |
+| | function GetValues(name,age) { |
+| | var that = { } |
+| | that.name = name |
+| | that.age = age |
+| | return that |
+| | } |
+| | |
+| | 生成对象 |
+| | |
+| | var obj = new obj(); |
+| | |
+| | ## 6.2 增删查 |
+| | |
+| | 查：obj.name |
+| | |
+| | 增：obj.原来obj中没有的属性，相当于将该属性添加到对象obj中 |
+| | |
+| | 删：delete 一般删之前要对该属性进行判断 |
+| | |
+| | ## 6.3 对象解构 |
+| | |
+| | let{name:personName, age:personAge} = obj（取别名） |
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-26js\347\254\254\344\270\203\350\212\202\344\270\223\344\270\232\350\257\276.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-26js\347\254\254\344\270\203\350\212\202\344\270\223\344\270\232\350\257\276.md"
index 113e3de436eaf11ecdb120220cac0959bf8b1726..3e509bb6e2b57dbdbcace342f112b0b20c46413b 100644
--- "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-26js\347\254\254\344\270\203\350\212\202\344\270\223\344\270\232\350\257\276.md"
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-26js\347\254\254\344\270\203\350\212\202\344\270\223\344\270\232\350\257\276.md"
@@ -1,31 +1,31 @@
-| 字面量 | | |
-| ------ | ------------------------------------------------------------ | ------------------------------ |
-| | [6](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_6) | |
-| | [7](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_7) | var obj = { |
-| | [8](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_8) | name:value; |
-| | [9](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_9) | 'String':value; |
-| | [10](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_10) | } |
-| | [11](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_11) | |
-| | [12](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_12) | 构造函数 |
-| | [13](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_13) | |
-| | [14](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_14) | function GetName() { |
-| | [15](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_15) | this.name = values; |
-| | [16](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_16) | this.age = values; |
-| | [17](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_17) | } |
-| | [18](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_18) | |
-| | [19](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_19) | 工厂模式（设计模式） |
-| | [20](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_20) | |
-| | [21](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_21) | function GetValues(name,age) { |
-| | [22](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_22) | var that = { } |
-| | [23](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_23) | that.name = name |
-| | [24](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_24) | that.age = age |
-| | [25](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_25) | return that |
-| | [26](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_26) | } |
-| | [27](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_27) | |
-| | [28](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_28) | 生成对象 |
-| | [29](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_29) | |
-| | [30](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_30) | var obj = new obj(); |
-| | [31](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_31) | |
-| | [32](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_32) | ## 6.2 增删查 |
-| | [33](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_33) | |
-| | [34](https://gitee.com/level-21-software-class-4/java-script/pulls/155/files#4c54f97bde7b1ddd7cfb3625805a0ec31119e57b_0_34) | 查：obj.name |
\ No newline at end of file
+| 字面量 | |
+| ------ | ------------------------------ |
+| | |
+| | var obj = { |
+| | name:value; |
+| | 'String':value; |
+| | } |
+| | |
+| | 构造函数 |
+| | |
+| | function GetName() { |
+| | this.name = values; |
+| | this.age = values; |
+| | } |
+| | |
+| | 工厂模式（设计模式） |
+| | |
+| | function GetValues(name,age) { |
+| | var that = { } |
+| | that.name = name |
+| | that.age = age |
+| | return that |
+| | } |
+| | |
+| | 生成对象 |
+| | |
+| | var obj = new obj(); |
+| | |
+| | ## 6.2 增删查 |
+| | |
+| | 查：obj.name |
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-27js\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-27js\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.md"
new file mode 100644
index 0000000000000000000000000000000000000000..fec7dc4f08ac2d61b103e1456faca2267fe50cbc
--- /dev/null
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-10-27js\347\254\254\345\205\253\346\254\241\344\275\234\344\270\232.md"
@@ -0,0 +1,41 @@
+| # 7、set&map | |
+| ------------ | ------------------------------------------------------ |
+| | |
+| | ## 7.1 map |
+| | |
+| | map方法 |
+| | |
+| | * clear: 清空 |
+| | * delete: 删除 |
+| | * entries: |
+| | * forEach: 遍历 |
+| | * get: 取值 |
+| | * has: 有无 |
+| | * keys: 键 |
+| | * set: 添加 |
+| | * size: 长度 |
+| | * values: 值 |
+| | |
+| | 查询map |
+| | |
+| | for (let e of ma){ |
+| | console.log(e); |
+| | } |
+| | |
+| | WeakSet WeakMap:弱引用(直接回收)，强引用(不会强制回收) |
+| | |
+| | map里不管是+0,0,-0,当成了同一个键（特殊） |
+| | |
+| | ## set |
+| | |
+| | set方法 |
+| | |
+| | * add: 添加 |
+| | * clear: 清空 |
+| | * delete: 删除 |
+| | * entries: |
+| | * forEach: 遍历 |
+| | * has: 有无 |
+| | * keys: 键 |
+| | * size: 长度 |
+| | * values: 值 |
\ No newline at end of file
diff --git "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-1020\347\254\254\344\272\224\346\254\241\344\275\234\344\270\232.md" "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-1020\347\254\254\344\272\224\346\254\241\344\275\234\344\270\232.md"
index 9b340382db1a1a4e371a858532cf528b37aab789..f601c5ed9aabee8d60d74b940635bfefd5f3c902 100644
--- "a/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-1020\347\254\254\344\272\224\346\254\241\344\275\234\344\270\232.md"
+++ "b/38\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260/2022-1020\347\254\254\344\272\224\346\254\241\344\275\234\344\270\232.md"
@@ -1,60 +1,60 @@
-| 函数: | | |
-| ----- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| | [2](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_2) | 匿名函数： function (){} |
-| | [3](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_3) | 箭头函数:var aa = (形参列表) => {函数体} arrow function |
-| | [4](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_4) | |
-| | [5](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_5) | 无返回值,一般不用箭头函数 |
-| | [6](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_6) | 如果箭头函数返回一个对象,那么需要在对象外面加上括号 |
-| | [7](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_7) | 例: |
-| | [8](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_8) | var aa = function (n1, n2) { |
-| | [9](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_9) | var sum = n1 + n2 |
-| | [10](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_10) | return sum; |
-| | [11](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_11) | } |
-| | [12](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_12) | 箭头: |
-| | [13](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_13) | var bb = (n1, n2) => { |
-| | [14](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_14) | var sum = n1 + n2; |
-| | [15](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_15) | return n1+n2; |
-| | [16](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_16) | } |
-| | [17](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_17) | var cc = (n1, n2) => n1 + n2; //函数只有一个return语句时，省略{}和return关键字,直接写返回值 |
-| | [18](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_18) | 当函数只有一个形参时，可以省略圆括号 |
-| | [19](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_19) | var dd = (num) => { |
-| | [20](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_20) | var res = 1; |
-| | [21](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_21) | for (var i = 1; i <= num; i++) { |
-| | [22](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_22) | res *= i; |
-| | [23](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_23) | } |
-| | [24](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_24) | return console.log(res);; |
-| | [25](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_25) | } |
-| | [26](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_26) | |
-| | [27](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_27) | var ee = () => '这是一个箭头函数'; //无参时，圆括号不可以省略 |
-| | [28](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_28) | 对象: |
-| | [29](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_29) | 对象： 类(人类，鱼类，鸟类) 万物对象:属性和行为 |
-| | [30](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_30) | 字面量表达式创建对象 |
-| | [31](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_31) | var obj = { |
-| | [32](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_32) | name:{ |
-| | [33](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_33) | firstName:'李', |
-| | [34](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_34) | lastName:'华' |
-| | [35](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_35) | }, |
-| | [36](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_36) | age:18, |
-| | [37](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_37) | 'qq number': 4619163491 |
-| | [38](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_38) | } |
-| | [39](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_39) | 属性:增删改查 |
-| | [40](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_40) | |
-| | [41](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_41) | 1.查 . 一级属性 二级属性往后[][] |
-| | [42](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_42) | 1.1查 使用 [] |
-| | [43](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_43) | console.log(obj['name']['lastName']); |
-| | [44](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_44) | 增 obj.原来obj中没有的属性，相当于将该属性添加到对象obj中 |
-| | [45](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_45) | obj.gender = '男' |
-| | [46](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_46) | console.log(obj); |
-| | [47](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_47) | |
-| | [48](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_48) | 删 delete 一般删之前要对该属性进行判断 |
-| | [49](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_49) | delete obj.age |
-| | [50](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_50) | console.log(obj); |
-| | [51](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_51) | |
-| | [52](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_52) | 构造函数 = new 对象 |
-| | [53](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_53) | |
-| | [54](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_54) | 普通函数命名规则：小驼峰:getName() |
-| | [55](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_55) | 构造函数命名规则：大驼峰:GetName() |
-| | [56](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_56) | var obj = new GetName() //生成了一个对象 |
-| | [57](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_57) | console.log(obj.age); |
-| | [58](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_58) | |
-| | [59](https://gitee.com/level-21-software-class-4/java-script/pulls/88/files#8559adefe7ff9afc844e60da73fdc07df9863d3c_0_59) | |
\ No newline at end of file
+| 函数: | |
+| ----- | ------------------------------------------------------------ |
+| | 匿名函数： function (){} |
+| | 箭头函数:var aa = (形参列表) => {函数体} arrow function |
+| | |
+| | 无返回值,一般不用箭头函数 |
+| | 如果箭头函数返回一个对象,那么需要在对象外面加上括号 |
+| | 例: |
+| | var aa = function (n1, n2) { |
+| | var sum = n1 + n2 |
+| | return sum; |
+| | } |
+| | 箭头: |
+| | var bb = (n1, n2) => { |
+| | var sum = n1 + n2; |
+| | return n1+n2; |
+| | } |
+| | var cc = (n1, n2) => n1 + n2; //函数只有一个return语句时，省略{}和return关键字,直接写返回值 |
+| | 当函数只有一个形参时，可以省略圆括号 |
+| | var dd = (num) => { |
+| | var res = 1; |
+| | for (var i = 1; i <= num; i++) { |
+| | res *= i; |
+| | } |
+| | return console.log(res);; |
+| | } |
+| | |
+| | var ee = () => '这是一个箭头函数'; //无参时，圆括号不可以省略 |
+| | 对象: |
+| | 对象： 类(人类，鱼类，鸟类) 万物对象:属性和行为 |
+| | 字面量表达式创建对象 |
+| | var obj = { |
+| | name:{ |
+| | firstName:'李', |
+| | lastName:'华' |
+| | }, |
+| | age:18, |
+| | 'qq number': 4619163491 |
+| | } |
+| | 属性:增删改查 |
+| | |
+| | 1.查 . 一级属性 二级属性往后[][] |
+| | 1.1查 使用 [] |
+| | console.log(obj['name']['lastName']); |
+| | 增 obj.原来obj中没有的属性，相当于将该属性添加到对象obj中 |
+| | obj.gender = '男' |
+| | console.log(obj); |
+| | |
+| | 删 delete 一般删之前要对该属性进行判断 |
+| | delete obj.age |
+| | console.log(obj); |
+| | |
+| | 构造函数 = new 对象 |
+| | |
+| | 普通函数命名规则：小驼峰:getName() |
+| | 构造函数命名规则：大驼峰:GetName() |
+| | var obj = new GetName() //生成了一个对象 |
+| | console.log(obj.age); |
+| | |
+| | |
\ No newline at end of file