JavaScript闭包

最新推荐文章于 2025-05-02 04:08:11 发布

yjc0403

最新推荐文章于 2025-05-02 04:08:11 发布

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分类专栏： JavaScript 文章标签： javascript ViewUI

本文链接：https://blog.youkuaiyun.com/yjc0403/article/details/84525430

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<!DOCTYPE HTML>
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<SCRIPT LANGUAGE="JavaScript">
<!--
//结构比较清晰的闭包
window.ChatLog1 = function(){
	function _ChatJS(){
		this.test = function(){
			alert(1);
		}
		
		this.aa = "aa";
		this.test2 = function(){
			alert(aa);
		}
		//将aa定义成常量，youyu4
		Object.defineProperty(this, "aa", {
			writable: false,	//不可修改
			configurable: false	//不可被删除
			//value: "aa1"
		});
	}
	return new _ChatJS();
}();


//传统的闭包形式
var person = {
	name: "Nicholas",
	age: 29,
	job: "Software Engineer",
	sayName: function(){
		alert(this.name);
	}
};

ChatLog1.aa = "bb";
alert(ChatLog1.aa);
//-->
</SCRIPT>
</HEAD>

<BODY>

</BODY>
</HTML>

New Document