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Javascript Validation

Hai Friends.

One time i tried to do  simple form validation..But ,it is not work properly even i code correctly..After spending long tome i got the solution which i want to share with you to save your time..one mistake i did which is just when i call the function it does not work properly…Instead when i am using retun validate(nam,pass) it works correctly…

<script type=”text/javascript”>

function validate(a,b)

if(a.value.length==0 || b.value.length==0)


alert(“Please fill your Username & Password”);

return false;



return true;



<form action=”send.php” method=”post”>

Username : <input type=”text” name=”nam”>

Password : <input type=”password” name=”pass”>

<input type=”submit” value=”Submit” onClick=”return validate(nam,pass)“>


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