jQuery继承extend用法详解
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
//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(); } });
html代码
<%@ 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"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <script type="text/javascript" src="jquery-1.7.js"></script> <script type="text/javascript" src="jquery-1.7.min.js"></script> <script type="text/javascript" src="my.js"></script> <script type="text/javascript"> $(function(){ var br = $("<br/>"); $(".myspan").append(br); }) </script> </head> <body> <script type="text/javascript"> document.write("判断是否为空:"+$.isBlank(null)); </script> <span class="myspan"></span> <script type="text/javascript"> document.write("过滤html标签:"+$.htmlContent("<html><body><a id='a1'>a标签</a><div style='width:100%'>div标签</div>内容</body></html>")+"<br/>"); document.write("扩展自jQuery类的xy的sayhello方法:"+ $.xy.sayhello()+"</br>"); document.write("扩展自jQuery类的xy的sayhello方法:"+ $.xy.saybaybay()+"</br>"); document.write("基于jQuery类的add法:"+ $.add(3,5)+"</br>"); document.write("基于jQuery类的diff法:"+ $.diff(5,3)+"</br>"); document.write("基于自jQuery类对象的扩展getvalue():"+$("<input type='text' value='str' />").getvalue()+"<br/>"); </script> </body> </html>
输出
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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