From c00648f3bdd89349be00ee777017055cf6bc2c6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=BB=84=E5=AF=8C=E8=B4=B5?= <2380003452@qq.com>
Date: Mon, 24 Oct 2022 03:46:52 +0000
Subject: [PATCH] =?UTF-8?q?=E9=BB=84=E5=AF=8C=E8=B4=B5?=
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Signed-off-by: 黄富贵 <2380003452@qq.com>
---
 ...24\350\257\276\347\254\224\350\256\260.md" | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 "36\351\273\204\345\257\214\350\264\265/10-21\344\275\234\344\270\232/10-21-\347\254\254\344\272\224\350\257\276\347\254\224\350\256\260.md"

diff --git "a/36\351\273\204\345\257\214\350\264\265/10-21\344\275\234\344\270\232/10-21-\347\254\254\344\272\224\350\257\276\347\254\224\350\256\260.md" "b/36\351\273\204\345\257\214\350\264\265/10-21\344\275\234\344\270\232/10-21-\347\254\254\344\272\224\350\257\276\347\254\224\350\256\260.md"
new file mode 100644
index 0000000..cd58a29
--- /dev/null
+++ "b/36\351\273\204\345\257\214\350\264\265/10-21\344\275\234\344\270\232/10-21-\347\254\254\344\272\224\350\257\276\347\254\224\350\256\260.md"
@@ -0,0 +1,54 @@
+1.concat : 连接，数组合并
+
+```
+concat arr = [1,2,3]
+concat arr1 = [4,5,6]
+concat new_arr = arr.caoncat(arr1);
+返回结果[1,2,3,4,5,6]
+```
+
+2.join:将数组转为字符串、
+
+```
+const arr [1,2,3,4,5,6]
+//console.log(arr.join)
+var str = arr.join(',')
+console.log(str)
+```
+
+3.for Each (遍历)
+
+```
+arr.forEach(
+    function(element){
+    arr[] = element+1
+        count++;
+    }
+)
+    console.log(arr);
+```
+
+4.映射方法map
+
+```
+const arr1 = arr.map(
+    function (element){
+        return element+1
+    }
+)
+    console.log(arr1)
+```
+
+5.filter 过滤：筛选数组中符合条件的数据
+
+```
+    arr.filter(
+        function(e){
+        return e >=3 //return: 返回 false：不符合条件的过滤
+        }
+    )
+```
+
+6.reduce( ): 归纳汇总  返回一个总数据
+
+7.every( );   some( );
-- 
Gitee