小妖

 img标签为空有两种情况，一种是基本的HTML:另一种是在JavaScript中：var img = new Image();img.src = "";  这两种情况都会导致同样的效果：IE会自动请求当前页面所在的路径，例如页面地址为http://www.example.com/dir/mypage.htm，那么IE将会自动请求一次http://www.e

JavaScript中有四种不同类型的循环，for循环、do-while循环和while循环。（第四种类型为for-in循环，用于迭代对象的属性，本文不予讨论。）代码如下：var values = [1, 2, 3, 4, 5];//for 循环for(var i=0; iprocess(values[i]);}//do-while 循环var j=0;do{process(values[j++]

The ProblemTry the following code on an empty page, one without any JavaScript libraries added: Try the following code on an empty page, one without any JavaScript libraries added: var associati

 This short function returns an object containing all possible information you would want to retrieve from a URL:parseURL// This function creates a new anchor element and uses location// prope

Although the days of long and tedious code branches to target specific browsers in JavaScript are over, once in a while its still necessary to do some simple code branching and object detection to en