Asp .NET Button – OnClientClick=”return function()” vs OnClientClick=”function()”

In an asp.net user control I have a button:

<asp:Button ID="addButton" runat="server" Text="Add"  OnClientClick="return function()".

I had written jquery code to hide a control( validationsummary) present in the page inside function().

When I wrote “return function()” it behaved as I expected and the control got hidden. While when I wrote only “function”()” the control got hidden but reappeared. What exactly is the difference between the two?

Answers:

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Method 1

First : the client side runs (OnClientClick)

Then – the server side.

But

The client side code can prevent execution of server side by return true/false.

usually we use it for validation , before submitting to server.

Do this and your server side will ( without hacking) never work :

OnClientClick="return false;"


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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