How to call JavaScript Function from Code-behind in asp.net?

657

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I'm calling a JS fcn that fires AJAX to a webmethod and returns a boolean. How do I retrieve the return value in the codebehind? (VB) I can set a hiddenfield value in the JS, but if it's async how can my VB know when it's changed?

670

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How to Print Asp.net GridView Data on Button Click using Javascript?

680

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How a web page can communicate with a web server while a user type characters in an input field.

1054

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how to remove or delete multiple selected items from listbox in on button click in asp?

627

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