本文实例为大家jQuery继承extend用法，供大家参考，具体内容如下
js代码
rush:js;">
//直接基于jQuery的扩展,判断是否为空
$.isBlank = function(obj){
return(typeof(obj)=='undefined'||obj==''||obj==null);
}
//直接基于jQuery的扩展，去除html标签，保留内容
$.htmlContent = function(tag){
var reTag = /<(?:.|\s)*?>/g;
return tag.replace(reTag,"");
}
//直接基于jQuery的扩展(方式二)
$.xy = {
sayhello:function(){return "hello";},saybaybay:function(){return "baybay";}
};
//jQuery类级别的扩展
$.extend({
add:function(a,b){return a+b;},diff:function(a,b){return a-b}
});
//jQuery对象级别的扩展
$.fn.extend({
getvalue:function(){
return this.val();
}
});
rush:xhtml;">
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<script type="text/javascript" src="jquery-1.7.js">
<script type="text/javascript" src="jquery-1.7.min.js">
<script type="text/javascript" src="my.js">
<script type="text/javascript">
$(function(){
var br = $("
");
$(".myspan").append(br);
})
