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howto ensure event handler finish task

 
Ranch Hand
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i have a textfield ,which have onChange event handler,when i change some value in
this textfield, if i go select the option pull-down menu which have
another different onchange event handler, when i click on options
pull-down menu , it give me blank page,

how do i make sure when user change some value in textfield and
the onChange event handler will finish first then only allow proceed other event?

thanks
 
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add code that has a busy flag and your other part has to wait to it is finished.

Eric
 
I can't beleive you just said that. Now I need to calm down with this tiny ad:
We need your help - Coderanch server fundraiser
https://coderanch.com/t/782867/Coderanch-server-fundraiser
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