优化 lay 的 `.find()` 元素操作，并优化大量代码排版，统一风格

src/modules/lay.js

@@ -4,51 +4,52 @@
 ;!function(window){ // gulp build: lay-header
   "use strict";
   
-  var MOD_NAME = 'lay' //模块名
+  var MOD_NAME = 'lay'; // 模块名
-  ,document = window.document
+  var document = window.document;
   
-  //DOM查找
+  // 元素查找
-  ,lay = function(selector){   
+  var lay = function(selector){   
-    return new LAY(selector);
+    return new Class(selector);
-  }
+  };
   
-  // DOM 构造器
+  // 构造器
-  ,LAY = function(selector){
+  var Class = function(selector){
-    var index = 0;
+    var that = this;
-    var nativeDOM = typeof selector === 'object' ? function(){
+    var elem = typeof selector === 'object' ? function(){
       // 仅适配简单元素对象
       return layui.isArray(selector) ? selector : [selector];
     }() : (
       this.selector = selector,
       document.querySelectorAll(selector || null)
     );
-    for(; index < nativeDOM.length; index++){
+
-      this.push(nativeDOM[index]);
+    lay.each(elem, function(index, item){
-    }
+      that.push(elem[index]);
+    });
   };
   
   /*
     lay 对象操作
   */
   
-  LAY.prototype = [];
+  Class.fn = Class.prototype = [];
-  LAY.prototype.constructor = LAY;
+  Class.fn.constructor = Class;
   
   // 普通对象深度扩展
   lay.extend = function(){
-    var ai = 1
+    var ai = 1;
-    ,length
+    var length;
-    ,args = arguments
+    var args = arguments;
-    ,clone = function(target, obj){
+    var clone = function(target, obj){
       target = target || (layui.type(obj) === 'array' ? [] : {}); // 目标对象
       for(var i in obj){
-        //如果值为普通对象，则进入递归，继续深度合并
+        // 若值为普通对象，则进入递归，继续深度合并
         target[i] = (obj[i] && obj[i].constructor === Object)
           ? clone(target[i], obj[i])
         : obj[i];
       }
       return target;
-    }
+    };
 
     args[0] = typeof args[0] === 'object' ? args[0] : {};
     length = args.length
@@ -61,9 +62,6 @@
     return args[0];
   };
   
-  //lay 模块版本
-  lay.v = '1.0.8';
-  
   // ie 版本
   lay.ie = function(){
     var agent = navigator.userAgent.toLowerCase();
@@ -73,10 +71,6 @@
   }();
   
   
-  
-  
-  
-  
   /** 
    * 获取 layui 常见方法，以便用于组件单独版
    */
@@ -90,9 +84,6 @@
   };
 
   
-  
-  
-  
   // 数字前置补零
   lay.digit = function(num, length){
     if(!(typeof num === 'string' || typeof num === 'number')) return '';
@@ -238,8 +229,14 @@
     return matched;
   };
 
+
+  /*
+   * lay 元素操作
+   */
+  
+
   // 追加字符
-  LAY.addStr = function(str, new_str){
+  Class.addStr = function(str, new_str){
     str = str.replace(/\s+/, ' ');
     new_str = new_str.replace(/\s+/, ' ').split(' ');
     lay.each(new_str, function(ii, item){
@@ -251,7 +248,7 @@
   };
   
   // 移除值
-  LAY.removeStr = function(str, new_str){
+  Class.removeStr = function(str, new_str){
     str = str.replace(/\s+/, ' ');
     new_str = new_str.replace(/\s+/, ' ').split(' ');
     lay.each(new_str, function(ii, item){
@@ -264,49 +261,43 @@
   };
   
   // 查找子元素
-  LAY.prototype.find = function(selector){
+  Class.fn.find = function(selector){
     var that = this;
-    var index = 0, arr = []
+    var elem = [];
-    ,isObject = typeof selector === 'object';
+    var isObject = typeof selector === 'object';
 
     this.each(function(i, item){
-      var nativeDOM = isObject ? item.contains(selector) : item.querySelectorAll(selector || null);
+      var children = isObject && item.contains(selector) 
-      for(; index < nativeDOM.length; index++){
+        ? selector
-        arr.push(nativeDOM[index]);
+      : item.querySelectorAll(selector || null);
-      }
+
-      that.shift();
+      lay.each(children, function(index, child){
+        elem.push(child);
+      });
     });
 
-    if(!isObject){
+    return lay(elem);
-      that.selector =  (that.selector ? that.selector + ' ' : '') + selector
-    }
-    
-    lay.each(arr, function(i, item){
-      that.push(item);
-    });
-    
-    return that;
   };
   
-  //DOM遍历
+  // 元素遍历
-  LAY.prototype.each = function(fn){
+  Class.fn.each = function(fn){
     return lay.each.call(this, this, fn);
   };
   
-  //添加css类
+  // 添加 className
-  LAY.prototype.addClass = function(className, type){
+  Class.fn.addClass = function(className, type){
     return this.each(function(index, item){
-      item.className = LAY[type ? 'removeStr' : 'addStr'](item.className, className)
+      item.className = Class[type ? 'removeStr' : 'addStr'](item.className, className)
     });
   };
   
-  //移除 css 类
+  // 移除 className
-  LAY.prototype.removeClass = function(className){
+  Class.fn.removeClass = function(className){
     return this.addClass(className, true);
   };
   
   // 是否包含 css 类
-  LAY.prototype.hasClass = function(className){
+  Class.fn.hasClass = function(className){
     var has = false;
     this.each(function(index, item){
       if(new RegExp('\\b'+ className +'\\b').test(item.className)){
@@ -317,9 +308,9 @@
   };
   
   // 添加或获取 css style
-  LAY.prototype.css = function(key, value){
+  Class.fn.css = function(key, value){
-    var that = this
+    var that = this;
-    ,parseValue = function(v){
+    var parseValue = function(v){
       return isNaN(v) ? v : (v +'px');
     };
     return (typeof key === 'string' && value === undefined) ? function(){
@@ -332,7 +323,7 @@
   };
   
   // 添加或获取宽度
-  LAY.prototype.width = function(value){
+  Class.fn.width = function(value){
     var that = this;
     return value === undefined ? function(){
       if(that.length > 0) return that[0].offsetWidth; // 此处还需做兼容
@@ -342,7 +333,7 @@
   };
   
   // 添加或获取高度
-  LAY.prototype.height = function(value){
+  Class.fn.height = function(value){
     var that = this;
     return value === undefined ? function(){
       if(that.length > 0) return that[0].offsetHeight; // 此处还需做兼容
@@ -352,7 +343,7 @@
   };
   
   // 添加或获取属性
-  LAY.prototype.attr = function(key, value){
+  Class.fn.attr = function(key, value){
     var that = this;
     return value === undefined ? function(){
       if(that.length > 0) return that[0].getAttribute(key);
@@ -362,14 +353,14 @@
   };
   
   // 移除属性
-  LAY.prototype.removeAttr = function(key){
+  Class.fn.removeAttr = function(key){
     return this.each(function(index, item){
       item.removeAttribute(key);
     });
   };
   
   // 设置或获取 HTML 内容
-  LAY.prototype.html = function(html){
+  Class.fn.html = function(html){
     var that = this;
     return html === undefined ? function(){
       if(that.length > 0) return that[0].innerHTML;
@@ -379,7 +370,7 @@
   };
   
   // 设置或获取值
-  LAY.prototype.val = function(value){
+  Class.fn.val = function(value){
     var that = this;
     return value === undefined ? function(){
       if(that.length > 0) return that[0].value;
@@ -389,7 +380,7 @@
   };
   
   // 追加内容
-  LAY.prototype.append = function(elem){
+  Class.fn.append = function(elem){
     return this.each(function(index, item){
       typeof elem === 'object' 
         ? item.appendChild(elem)
@@ -398,14 +389,14 @@
   };
   
   // 移除内容
-  LAY.prototype.remove = function(elem){
+  Class.fn.remove = function(elem){
     return this.each(function(index, item){
       elem ? item.removeChild(elem) : item.parentNode.removeChild(item);
     });
   };
   
   // 事件绑定
-  LAY.prototype.on = function(eventName, fn){
+  Class.fn.on = function(eventName, fn){
     return this.each(function(index, item){
       item.attachEvent ? item.attachEvent('on' + eventName, function(e){
         e.target = e.srcElement;
@@ -415,7 +406,7 @@
   };
   
   // 解除事件
-  LAY.prototype.off = function(eventName, fn){
+  Class.fn.off = function(eventName, fn){
     return this.each(function(index, item){
       item.detachEvent 
         ? item.detachEvent('on'+ eventName, fn)  
@@ -423,12 +414,12 @@
     });
   };
   
-  //暴露 lay 到全局作用域
+  // export
   window.lay = lay;
   
-  //如果在 layui 体系中
+  // 输出为 layui 模块
   if(window.layui && layui.define){
-    layui.define(function(exports){ //layui 加载
+    layui.define(function(exports){
       exports(MOD_NAME, lay);
     });
   }