javascript - 在经典 asp : what's wrong with "this"? 中使用服务器端 javascript

Question

similar: Inserting objects into global scope in classic ASP / Javascript

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尝试开始在经典 ASP 中使用 javascript。虽然这似乎是一些“陷阱”:有这方面经验的任何人都可以告诉我“Blah2”代码是怎么回事吗？看起来它“应该”有效，但我使用“this”似乎有问题......

<script language="javascript" runat="server">

 var Blah = {};
 Blah.w = function(s){Response.write(s);}

 Blah.w('hello'); //this works...


 var Blah2 = function(){
     this.w = function(s){Response.write(s);} 
     //line above gives 'Object doesn't support this property or method'
     return this;
 }();

 Blah2.w('hello');

</script>

感谢指点

蒂姆

Answer 1

你的函数需要括号

var Blah2 = (function(){
    this.w = function(s){Response.write(s);} 
    //line above gives 'Object doesn't support this property or method'
    return this;
}());

此外，this.w 没有按照您的意愿进行。 this 实际上指向那里的全局对象。你想要:

var Blah2 = (function(){
    return {w : function(s){ Response.write(s); }};
}());

或者

bar Blah2 = new (function(){
   ...