Arguseye · November 6, 2014 04:03
diff --git a/dabblet.css b/dabblet.css
 /**
 * The first commented line is your dabblet’s title
 */

 background: #f06;
 background: linear-gradient(45deg, #f06, yellow);
 min-height: 100%;
diff --git a/dabblet.html b/dabblet.html
 <!-- content to be placed inside <body>…</body> -->
diff --git a/dabblet.js b/dabblet.js
 // alert('Hello world!');
 Array.prototype.forEach = function(fn, thisArg){
             //参数需要判断，throw exception是规范里面写的
          if(typeof fn !== "function"){
               throw new Error("TypeError exception");
          }

          var array = this,
              length = array.length,//减少作用链的请求，在做数组操作时要考虑到length的自增长
              i = 0;
         
          //var a = function() { console.log(this); };  a.call(void 0); void 0 给和不给this的对象都是指向window的，下面这句话是多于
          //thisArg = (typeof thisArg === "undefined" ) ? window : thisArg;

          for(;i < length;i++){
               //var a = []; a[3] = 4; a.hasOwnProperty(1) === false; a.hasOwnProperty(3) === true; 就找第三个这个元素
            if(array.hasOwnProperty(i)){
               fn.call(thisArg, array[i], i, array);
            }
          }
         }
diff --git a/settings.json b/settings.json
 {"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"javascript"}
	/**
	* The first commented line is your dabblet’s title
	*/

	background: #f06;
	background: linear-gradient(45deg, #f06, yellow);
	min-height: 100%;
	// alert('Hello world!');
	Array.prototype.forEach = function(fn, thisArg){
	//参数需要判断，throw exception是规范里面写的
	if(typeof fn !== "function"){
	throw new Error("TypeError exception");
	}

	var array = this,
	length = array.length,//减少作用链的请求，在做数组操作时要考虑到length的自增长
	i = 0;

	//var a = function() { console.log(this); }; a.call(void 0); void 0 给和不给this的对象都是指向window的，下面这句话是多于
	//thisArg = (typeof thisArg === "undefined" ) ? window : thisArg;

	for(;i < length;i++){
	//var a = []; a[3] = 4; a.hasOwnProperty(1) === false; a.hasOwnProperty(3) === true; 就找第三个这个元素
	if(array.hasOwnProperty(i)){
	fn.call(thisArg, array[i], i, array);
	}
	}
	}