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一个轻量,简约,包含丰富模块化前端框架 ,帮您快速构建网站 http://www.we63.com
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layui.js 14.68 KB mustards authored 2018-07-31 15:31 . v1.0 提交
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/*!
@Title: Layui
@Description:经典模块化前端框架
@Site: www.layui.com
@Author: 贤心
@License:MIT
*/
;!function(win){
"use strict";
var doc = document, config = {
modules: {} //记录模块物理路径
,status: {} //记录模块加载状态
,timeout: 10 //符合规范的模块请求最长等待秒数
,event: {} //记录模块自定义事件
}
,Layui = function(){
this.v = '2.3.0'; //版本号
}
//获取layui所在目录
,getPath = function(){
var jsPath = doc.currentScript ? doc.currentScript.src : function(){
var js = doc.scripts
,last = js.length - 1
,src;
for(var i = last; i > 0; i--){
if(js[i].readyState === 'interactive'){
src = js[i].src;
break;
}
}
return src || js[last].src;
}();
return jsPath.substring(0, jsPath.lastIndexOf('/') + 1);
}()
//异常提示
,error = function(msg){
win.console && console.error && console.error('Layui hint: ' + msg);
}
,isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]'
//内置模块
,modules = {
layer: 'modules/layer' //弹层
,laydate: 'modules/laydate' //日期
,laypage: 'modules/laypage' //分页
,laytpl: 'modules/laytpl' //模板引擎
,layim: 'modules/layim' //web通讯
,layedit: 'modules/layedit' //富文本编辑器
,form: 'modules/form' //表单集
,upload: 'modules/upload' //上传
,tree: 'modules/tree' //树结构
,table: 'modules/table' //表格
,element: 'modules/element' //常用元素操作
,rate: 'modules/rate' //评分组件
,carousel: 'modules/carousel' //轮播
,flow: 'modules/flow' //流加载
,util: 'modules/util' //工具块
,code: 'modules/code' //代码修饰器
,jquery: 'modules/jquery' //DOM库(第三方)
,mobile: 'modules/mobile' //移动大模块 | 若当前为开发目录,则为移动模块入口,否则为移动模块集合
,'layui.all': '../layui.all' //PC模块合并版
};
//记录基础数据
Layui.prototype.cache = config;
//定义模块
Layui.prototype.define = function(deps, factory){
var that = this
,type = typeof deps === 'function'
,callback = function(){
var setApp = function(app, exports){
layui[app] = exports;
config.status[app] = true;
};
typeof factory === 'function' && factory(function(app, exports){
setApp(app, exports);
config.callback[app] = function(){
factory(setApp);
}
});
return this;
};
type && (
factory = deps,
deps = []
);
if(layui['layui.all'] || (!layui['layui.all'] && layui['layui.mobile'])){
return callback.call(that);
}
that.use(deps, callback);
return that;
};
//使用特定模块
Layui.prototype.use = function(apps, callback, exports){
var that = this
,dir = config.dir = config.dir ? config.dir : getPath
,head = doc.getElementsByTagName('head')[0];
apps = typeof apps === 'string' ? [apps] : apps;
//如果页面已经存在jQuery1.7+库且所定义的模块依赖jQuery,则不加载内部jquery模块
if(window.jQuery && jQuery.fn.on){
that.each(apps, function(index, item){
if(item === 'jquery'){
apps.splice(index, 1);
}
});
layui.jquery = layui.$ = jQuery;
}
var item = apps[0]
,timeout = 0;
exports = exports || [];
//静态资源host
config.host = config.host || (dir.match(/\/\/([\s\S]+?)\//)||['//'+ location.host +'/'])[0];
//加载完毕
function onScriptLoad(e, url){
var readyRegExp = navigator.platform === 'PLaySTATION 3' ? /^complete$/ : /^(complete|loaded)$/
if (e.type === 'load' || (readyRegExp.test((e.currentTarget || e.srcElement).readyState))) {
config.modules[item] = url;
head.removeChild(node);
(function poll() {
if(++timeout > config.timeout * 1000 / 4){
return error(item + ' is not a valid module');
};
config.status[item] ? onCallback() : setTimeout(poll, 4);
}());
}
}
//回调
function onCallback(){
exports.push(layui[item]);
apps.length > 1 ?
that.use(apps.slice(1), callback, exports)
: ( typeof callback === 'function' && callback.apply(layui, exports) );
}
//如果使用了 layui.all.js
if(apps.length === 0
|| (layui['layui.all'] && modules[item])
|| (!layui['layui.all'] && layui['layui.mobile'] && modules[item])
){
return onCallback(), that;
}
//首次加载模块
if(!config.modules[item]){
var node = doc.createElement('script')
//如果是内置模块,则按照 dir 参数拼接模块路径
//如果是扩展模块,则判断模块路径值是否为 {/} 开头,
//如果路径值是 {/} 开头,则模块路径即为后面紧跟的字符。
//否则,则按照 base 参数拼接模块路径
,url = ( modules[item] ? (dir + 'lay/')
: (/^\{\/\}/.test(that.modules[item]) ? '' : (config.base || ''))
) + (that.modules[item] || item) + '.js';
url = url.replace(/^\{\/\}/, '');
node.async = true;
node.charset = 'utf-8';
node.src = url + function(){
var version = config.version === true
? (config.v || (new Date()).getTime())
: (config.version||'');
return version ? ('?v=' + version) : '';
}();
head.appendChild(node);
if(node.attachEvent && !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && !isOpera){
node.attachEvent('onreadystatechange', function(e){
onScriptLoad(e, url);
});
} else {
node.addEventListener('load', function(e){
onScriptLoad(e, url);
}, false);
}
config.modules[item] = url;
} else { //缓存
(function poll() {
if(++timeout > config.timeout * 1000 / 4){
return error(item + ' is not a valid module');
};
(typeof config.modules[item] === 'string' && config.status[item])
? onCallback()
: setTimeout(poll, 4);
}());
}
return that;
};
//获取节点的style属性值
Layui.prototype.getStyle = function(node, name){
var style = node.currentStyle ? node.currentStyle : win.getComputedStyle(node, null);
return style[style.getPropertyValue ? 'getPropertyValue' : 'getAttribute'](name);
};
//css外部加载器
Layui.prototype.link = function(href, fn, cssname){
var that = this
,link = doc.createElement('link')
,head = doc.getElementsByTagName('head')[0];
if(typeof fn === 'string') cssname = fn;
var app = (cssname || href).replace(/\.|\//g, '')
,id = link.id = 'layuicss-'+app
,timeout = 0;
link.rel = 'stylesheet';
link.href = href + (config.debug ? '?v='+new Date().getTime() : '');
link.media = 'all';
if(!doc.getElementById(id)){
head.appendChild(link);
}
if(typeof fn !== 'function') return that;
//轮询css是否加载完毕
(function poll() {
if(++timeout > config.timeout * 1000 / 100){
return error(href + ' timeout');
};
parseInt(that.getStyle(doc.getElementById(id), 'width')) === 1989 ? function(){
fn();
}() : setTimeout(poll, 100);
}());
return that;
};
//存储模块的回调
config.callback = {};
//重新执行模块的工厂函数
Layui.prototype.factory = function(modName){
if(layui[modName]){
return typeof config.callback[modName] === 'function'
? config.callback[modName]
: null;
}
};
//css内部加载器
Layui.prototype.addcss = function(firename, fn, cssname){
return layui.link(config.dir + 'css/' + firename, fn, cssname);
};
//图片预加载
Layui.prototype.img = function(url, callback, error) {
var img = new Image();
img.src = url;
if(img.complete){
return callback(img);
}
img.onload = function(){
img.onload = null;
typeof callback === 'function' && callback(img);
};
img.onerror = function(e){
img.onerror = null;
typeof error === 'function' && error(e);
};
};
//全局配置
Layui.prototype.config = function(options){
options = options || {};
for(var key in options){
config[key] = options[key];
}
return this;
};
//记录全部模块
Layui.prototype.modules = function(){
var clone = {};
for(var o in modules){
clone[o] = modules[o];
}
return clone;
}();
//拓展模块
Layui.prototype.extend = function(options){
var that = this;
//验证模块是否被占用
options = options || {};
for(var o in options){
if(that[o] || that.modules[o]){
error('\u6A21\u5757\u540D '+ o +' \u5DF2\u88AB\u5360\u7528');
} else {
that.modules[o] = options[o];
}
}
return that;
};
//路由解析
Layui.prototype.router = function(hash){
var that = this
,hash = hash || location.hash
,data = {
path: []
,search: {}
,hash: (hash.match(/[^#](#.*$)/) || [])[1] || ''
};
if(!/^#\//.test(hash)) return data; //禁止非路由规范
hash = hash.replace(/^#\//, '');
data.href = '/' + hash;
hash = hash.replace(/([^#])(#.*$)/, '$1').split('/') || [];
//提取Hash结构
that.each(hash, function(index, item){
/^\w+=/.test(item) ? function(){
item = item.split('=');
data.search[item[0]] = item[1];
}() : data.path.push(item);
});
return data;
};
//本地持久性存储
Layui.prototype.data = function(table, settings, storage){
table = table || 'layui';
storage = storage || localStorage;
if(!win.JSON || !win.JSON.parse) return;
//如果settings为null,则删除表
if(settings === null){
return delete storage[table];
}
settings = typeof settings === 'object'
? settings
: {key: settings};
try{
var data = JSON.parse(storage[table]);
} catch(e){
var data = {};
}
if('value' in settings) data[settings.key] = settings.value;
if(settings.remove) delete data[settings.key];
storage[table] = JSON.stringify(data);
return settings.key ? data[settings.key] : data;
};
//本地会话性存储
Layui.prototype.sessionData = function(table, settings){
return this.data(table, settings, sessionStorage);
}
//设备信息
Layui.prototype.device = function(key){
var agent = navigator.userAgent.toLowerCase()
//获取版本号
,getVersion = function(label){
var exp = new RegExp(label + '/([^\\s\\_\\-]+)');
label = (agent.match(exp)||[])[1];
return label || false;
}
//返回结果集
,result = {
os: function(){ //底层操作系统
if(/windows/.test(agent)){
return 'windows';
} else if(/linux/.test(agent)){
return 'linux';
} else if(/iphone|ipod|ipad|ios/.test(agent)){
return 'ios';
} else if(/mac/.test(agent)){
return 'mac';
}
}()
,ie: function(){ //ie版本
return (!!win.ActiveXObject || "ActiveXObject" in win) ? (
(agent.match(/msie\s(\d+)/) || [])[1] || '11' //由于ie11并没有msie的标识
) : false;
}()
,weixin: getVersion('micromessenger') //是否微信
};
//任意的key
if(key && !result[key]){
result[key] = getVersion(key);
}
//移动设备
result.android = /android/.test(agent);
result.ios = result.os === 'ios';
return result;
};
//提示
Layui.prototype.hint = function(){
return {
error: error
}
};
//遍历
Layui.prototype.each = function(obj, fn){
var key
,that = this;
if(typeof fn !== 'function') return that;
obj = obj || [];
if(obj.constructor === Object){
for(key in obj){
if(fn.call(obj[key], key, obj[key])) break;
}
} else {
for(key = 0; key < obj.length; key++){
if(fn.call(obj[key], key, obj[key])) break;
}
}
return that;
};
//将数组中的对象按其某个成员排序
Layui.prototype.sort = function(obj, key, desc){
var clone = JSON.parse(
JSON.stringify(obj || [])
);
if(!key) return clone;
//如果是数字,按大小排序,如果是非数字,按字典序排序
clone.sort(function(o1, o2){
var isNum = /^-?\d+$/
,v1 = o1[key]
,v2 = o2[key];
if(isNum.test(v1)) v1 = parseFloat(v1);
if(isNum.test(v2)) v2 = parseFloat(v2);
if(v1 && !v2){
return 1;
} else if(!v1 && v2){
return -1;
}
if(v1 > v2){
return 1;
} else if (v1 < v2) {
return -1;
} else {
return 0;
}
});
desc && clone.reverse(); //倒序
return clone;
};
//阻止事件冒泡
Layui.prototype.stope = function(thisEvent){
thisEvent = thisEvent || win.event;
try { thisEvent.stopPropagation() } catch(e){
thisEvent.cancelBubble = true;
}
};
//自定义模块事件
Layui.prototype.onevent = function(modName, events, callback){
if(typeof modName !== 'string'
|| typeof callback !== 'function') return this;
return Layui.event(modName, events, null, callback);
};
//执行自定义模块事件
Layui.prototype.event = Layui.event = function(modName, events, params, fn){
var that = this
,result = null
,filter = events.match(/\((.*)\)$/)||[] //提取事件过滤器字符结构,如:select(xxx)
,eventName = (modName + '.'+ events).replace(filter[0], '') //获取事件名称,如:form.select
,filterName = filter[1] || '' //获取过滤器名称,,如:xxx
,callback = function(_, item){
var res = item && item.call(that, params);
res === false && result === null && (result = false);
};
//添加事件
if(fn){
config.event[eventName] = config.event[eventName] || {};
//这里不再对多次事件监听做支持,避免更多麻烦
//config.event[eventName][filterName] ? config.event[eventName][filterName].push(fn) :
config.event[eventName][filterName] = [fn];
return this;
}
//执行事件回调
layui.each(config.event[eventName], function(key, item){
//执行当前模块的全部事件
if(filterName === '{*}'){
layui.each(item, callback);
return;
}
//执行指定事件
key === '' && layui.each(item, callback);
key === filterName && layui.each(item, callback);
});
return result;
};
win.layui = new Layui();
}(window);

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