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Editorial Team
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Asked: 2026-05-28T07:28:32+00:00

I found that onclick function must return false for proceeding with href value and

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I found that onclick function must return false for proceeding with href value and true for blocking the same . I used the same here too . on returning false , it is right , proceeding with URL but on returning true , it is also opening the URL page .

So what is different between returning true / false value from onclick function .

I am using Firefox 9.0.1 and IE 7 . . Following is my html file .

<html>
<head>
<script language="JavaScript" type="text/javascript">
function clickthis()
 {
 alert("its onclick Function call ");
 return true;
 }

  </script>
 </head>
 <body >
  <a id="foo" onclick="clickthis();" href="http://google.com">google</a>
 </body>
</html>

I got confused with this behaviour .

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1 Answer

  1. Editorial Team

    The event handler needs to return false to prevent normal link action, and it is not suffient to just call a function; the handler itself needs to return the value false if you wish to suppress the action. So the attribute should be

    onclick="return clickthis();"
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