JavaScript闭包
<!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
相关推荐
yuwinter 2020-10-14
nmgxzm00 2020-11-10
ifconfig 2020-10-14
hhanbj 2020-11-17
zfszhangyuan 2020-11-16
古叶峰 2020-11-16
一个智障 2020-11-15
jipengx 2020-11-12
81427005 2020-11-11
xixixi 2020-11-11
游走的豚鼠君 2020-11-10
苗疆三刀的随手记 2020-11-10
Web卓不凡 2020-11-03
小飞侠V 2020-11-02
帕尼尼 2020-10-30
爱读书的旅行者 2020-10-26
帕尼尼 2020-10-23
杏仁技术站 2020-10-23