English 中文(简体)
公开方法与原型
原标题:Attaching a public method to a prototype

这是我的法典:

var Quo = function(string) {            //This creates an object with a  status  property.
    this.status = string;
};

Quo.prototype.get_status = function() { //This gives all instances of Quo the  get_status  method, 
                                        //which returns  this.status  by default, unless another 
                                        //instance rewrites the return statement.
    return this.status;
};

var myQuo = new Quo("confused");        //the `new` statement creates an instance of Quo().

document.write(myQuo);

当我操作该代码时,结果为<代码>[目标]。 由于get_status() 附于 Quo prototype,tn t打。 Quo 足以援引该方法? 我在这里错了什么?

最佳回答

是否应当使用<条码>文件。

<>Update:

另一种选择是超越常规方法:

Quo.prototype.toString = function() {
    return this.status;
};
问题回答

暂无回答




相关问题
selected text in iframe

How to get a selected text inside a iframe. I my page i m having a iframe which is editable true. So how can i get the selected text in that iframe.

How to fire event handlers on the link using javascript

I would like to click a link in my page using javascript. I would like to Fire event handlers on the link without navigating. How can this be done? This has to work both in firefox and Internet ...

How to Add script codes before the </body> tag ASP.NET

Heres the problem, In Masterpage, the google analytics code were pasted before the end of body tag. In ASPX page, I need to generate a script (google addItem tracker) using codebehind ClientScript ...

Clipboard access using Javascript - sans Flash?

Is there a reliable way to access the client machine s clipboard using Javascript? I continue to run into permissions issues when attempting to do this. How does Google Docs do this? Do they use ...

javascript debugging question

I have a large javascript which I didn t write but I need to use it and I m slowely going trough it trying to figure out what does it do and how, I m using alert to print out what it does but now I ...

Parsing date like twitter

I ve made a little forum and I want parse the date on newest posts like twitter, you know "posted 40 minutes ago ","posted 1 hour ago"... What s the best way ? Thanx.

热门标签