javascript String.replace函数
javascript的String类内置函数replace(regexp, newString)函数提供了字符串替换功能，从函数原型上可以看出支持 Regular Exp。此函数功能非常实用，但也有几个地方有点混淆，下面通过实际的例子来说明：
比如我们现在要针对串
var src="<a href="http://xx.com/a/20100601/000224.htm" target="_blank">xxx</a>"
要替换其中的HTML双引号的转移符 " 为实际的 " , 正常我们就会直接调用 src.replace(/"/g, '"');来达到目的，但是js容易让人迷惑的一点就是，这样做并没有实际改变src的值，实际测试发现返回值才是我们需要的结果，而src本身确不发生变化，所以实际中需要通过如下来完成我们的功能：
src=src.replace(/"/g, '"');
相关文档：
Use the Fast Parts 使用速度快的部分
Even though JavaScript is often blamed for being slow, there are parts of the language that are incredibly fast. This should come as no surprise, since JavaScript engines are built in lower-level languages and are therefore compiled. Thou ......
第九章
Building and Deploying High-Performance JavaScript Applications
创建并部署高性能JavaScript应用程序
According to a 2007 study by Yahoo!'s Exceptional Performance team, 40%–60% of Yahoo!'s users have an empty cache experience, and about 20% of all page views are done ......
JavaScript Minification JavaScript紧凑
JavaScript minification is the process by which a JavaScript file is stripped of everything that does not contribute to its execution. This includes comments and unnecessary whitespace. The process typically reduces the file size by ha ......
Firebug
Firefox is a popular browser with developers, partially due to the Firebug addon (available at http://www.getfirebug.com/), which was developed initially by Joe Hewitt and is now maintained by the Mozilla Foundation. This tool has increased the productivity of web develop ......
新中……
1、数据类型验证问题
Asp.Net虽然有验证控件，但是有些复杂的验证还是得传到服务器上进行，用js速度和性能都比较好
<script>
//检查是否为任意数（实数）
function isNumeric(strNumber) {
var newPar=/^(-|\+)?\d+(\.\d+)?$/
alert(newPar.test(strNumber)); }
//� ......
