帮忙看看这个能不能行 就是一个类a包含基本的方法属性然后另一个类b在a的基础上进行扩展 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 我也show一下 ^.^在Class层次上"继承"<script type="text/javascript">function BaseClass(str){ this.Message = str || "Hello Wrold!"; this.ShowMessage = function(){ alert(this.Message); } }function ExtendClass(str){ this.Message2 = str || "Hello Wrold!"; this.ShowMessage2 = function(){ alert(this.Message2); } }ExtendClass.prototype = new BaseClass();//Test Drivervar ExtendInstance = new ExtendClass("From Extend Class");ExtendInstance.ShowMessage2();ExtendInstance.ShowMessage();</script>在Object层次上"继承"<script type="text/javascript">Object.prototype.Extend = function(Base,Args){ if(Args instanceof Array) Base.apply(this,Args); else Base.call(this,Args);}function BaseClass(str){ this.Message = str || "Hello Wrold!"; this.ShowMessage = function(){ alert(this.Message); } }function ExtendClass(str){ this.Message2 = str || "Hello Wrold!"; this.ShowMessage2 = function(){ alert(this.Message2); } }//Test Drivervar ExtendInstance = new ExtendClass("From Extend Class");ExtendInstance.Extend(BaseClass,"From Base Class");ExtendInstance.ShowMessage2();ExtendInstance.ShowMessage();</script> EXT TreePanel使用TreeLoader获取数据后。目录是循环无限展开 网站的js应该怎么布置 如何在打开页面时将光标定位在某个文本框? javascript 基本问题 刚开始学 JS 求一个软件编写JS JavaScript中Text中内容显示在右边是什么属性来着 ,谢谢!!!新手上路 请帮忙解读一段代码.. Extjs 4.0显示图片 "document.all"是什么意思???? easyui datetimebox 赋值无效,求各位大神指点 start = start || 0; 怎么解释!!! 关于闭包的疑惑
function BaseClass(str){
this.Message = str || "Hello Wrold!";
this.ShowMessage = function(){
alert(this.Message);
}
}function ExtendClass(str){
this.Message2 = str || "Hello Wrold!";
this.ShowMessage2 = function(){
alert(this.Message2);
}
}ExtendClass.prototype = new BaseClass();//Test Driver
var ExtendInstance = new ExtendClass("From Extend Class");
ExtendInstance.ShowMessage2();
ExtendInstance.ShowMessage();
</script>
在Object层次上"继承"<script type="text/javascript">
Object.prototype.Extend = function(Base,Args){
if(Args instanceof Array) Base.apply(this,Args);
else Base.call(this,Args);
}function BaseClass(str){
this.Message = str || "Hello Wrold!";
this.ShowMessage = function(){
alert(this.Message);
}
}function ExtendClass(str){
this.Message2 = str || "Hello Wrold!";
this.ShowMessage2 = function(){
alert(this.Message2);
}
}//Test Driver
var ExtendInstance = new ExtendClass("From Extend Class");
ExtendInstance.Extend(BaseClass,"From Base Class");
ExtendInstance.ShowMessage2();
ExtendInstance.ShowMessage();
</script>