Validation For Html Form Adding 2 Numbers?

May 26, 2009

I am trying to create an html form for adding 2 numbers and also trying to validate using java script. what I want is instead of getting an alert msg as a result

I want the result to be displayed in the sum:text box --- not as an alert I want to validate the input fields ,if null -- throw an alert msg


<!DOCTYPE html PUBLIC "-W3CDTD HTML 4.01 TransitionalEN" "http:www.w3.org/TR/html4/loose.dtd">
<html>
<head>

[Code].....

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<HTML>

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<script type="text/JavaScript">
<!--
function MM_findObj(n, d) { //v4.01
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[Code]...

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<script type="text/javascript">
window.onload=function(){
document.forms[0].onsubmit=function(){

[code]....

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Code:
<html>
<head>

[code]....

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<?php

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[Code]...

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