在回调函数中访问$(this) [英] Accessing $(this) within a callback function

问题描述

由于IE阻止了hint()的运行，因此我正在努力将hint()更改为jPrompt().问题是$(this)不再正常工作，因为jPrompt()不会返回值，而是使用回调函数.

I'm working on changing prompt() to jPrompt() since IE blocks prompt() from running. The problem is $(this) no longer works correctly because jPrompt() doesn't return a value, but uses a callback function.

所以可以说我有类似的东西，可以工作:

So lets say I have something like this, which works:

$("a.foo").click(function(){
    $(this).text(prompt("Type Something",""));
}

当我将其转换为它时，它会崩溃:

When I convert it to this it breaks:

$("a.foo").click(function(){
    jPrompt("Type something:","","", function(r) {
        $(this).text(r);
    }
}

如何正确访问$(this)?

How do I access $(this) properly?

推荐答案

尝试一下:

$("a.foo").click(function(){
    var that = this;
    jPrompt("Type something:","","", function(r) {
        $(that).text(r);
    }
}

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