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Javascript how to be sure function executed successfully

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Last Modified: 2013-11-19
My operation takes long time to finish.

<html>
<head>

function doOperation(){

     //do somethin if something executed successfully then close window. but be sure .


}
</head>
<body>
<a href="#" onclick="doOperation();">Do Operation Then Close Window</a>
</body>
</html>

How can i be sure is my operation finished.

Thanks. Please Help.
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HonorGodSoftware Engineer
CERTIFIED EXPERT

Commented:
It depends upon the operation.  There are so many possibilities.

What kind of operation is it?
Commented:
Javascript is a top-down language.  Meaning, it executes one statement at a time from the top down.  

You could put the window close statement in a second function.  Then at the end of the doOperation function make an if statement testing for a condition that you set if your operation completes.  If it is true, call the close function.  If the operation does not complete, don't set the condition to true, and the close function is not called.

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Commented:
Can you give an example of something you want to do?
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