Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
220 views
in Technique[技术] by (71.8m points)

javascript - Arguments.callee is deprecated - what should be used instead?

For doing things like

setTimeout(function () {
    ...
    setTimeout(arguments.callee, 100);
}, 100);

I need something like arguments.callee. I found information at javascript.info that arguments.callee is deprecated:

This property is deprecated by ECMA-262 in favor of named function expressions and for better performance.

But what should be then used instead? Something like this?

setTimeout(function myhandler() {
    ...
    setTimeout(myhandler, 100);
}, 100);
// has a big advantage that myhandler cannot be seen here!!! 
// so it doesn't spoil namespace

BTW, is arguments.callee cross-browser compatible?

Question&Answers:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Yes, that's what, theoretically, should be used. You're right. However, it doesn't work in some versions of Internet Explorer, as always. So be careful. You may need to fall back on arguments.callee, or, rather, a simple:

function callback() {
    // ...
    setTimeout(callback, 100);
}

setTimeout(callback, 100);

Which does work on IE.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...