Question

PHP Code to add two numbers , adding happens as soon as i type the second number in the second field with the result populating in the third field.

Can it be done using php or we do use Ajax or other programming languages.

Would be helpful if i could get an answer for this.

Answer 1

Javascript is enough for this purpose

<script type="text/javascript">
function Adder()
{
var a= parseInt(document.frm.A.value);
var b = parseInt(document.frm.B.value);
var result=a+b;
document.frm.Result.value=result;
}
</script>
<form name="frm">
<input id="A" name="A" type="Text" onchange="Adder()" >
<input id="B" name="B" type="Text" onchange="Adder()" >
<input id="Result" name="Result" type="Text" >
</form>