yield execution in javascipt

[kewpie_007]

This post is to discuss whether the capability of yielding execution in javascript is helpful and welcomed.

I hit an async-to-sync issue when to implement some synchronous API using asynchronous API. After asynchronous API is called, I want to wait for result for a while and return then. However, the result is set in callback way, and it's impossible to wait by busy while loop, because otherwise callback would never be called.

If javascript could conditionally yield its execution to browser, and then browser would be able to schedule other workable tasks and invoke callbacks. Once condition is met, execution can resume from yield point again.

In this way, nothing will be blocked, whereas, we can achieve some synchronous program style.

I have tried this out in Chromium (w/ necessary change), and it works pretty well.

Wondering if you have any comment.

[phil karras]

Try using either the "setTimeout, clearTimeout" methods or the set & clearInterval() methods.

here's a good explination of how & when to use these methods:

http://www.w3schools.com/js/js_timing.asp
_________________
Phil K
Circle Software Consulting
Test website: http://cs.yrex.com/
Guidelines for Posting: http://www.jsworkshop.com/posting.html
IHBAAA = It Has Been Asked And Answered
KISS: http://www.jsworkshop.com/bb/viewtopic.php?t=508