Instantly add text box values

[danprhayes]

I have 3 rows of text boxes.

First row = user defined integer
Second row = different user defined integer
thrid row = the total of each column added together.

How is this possible? Simple surely?

Without a button (so it adds as data typed).

thanks

[gil davis]

<form onsubmit="return false">
<input type="text" name="i1" onkeyup="this.form.sum.value=Number(this.value)+Number(this.form.i2.value)"><br>
<input type="text" name="i2" onkeyup="this.form.sum.value=Number(this.value)+Number(this.form.i1.value)"><br>
<input type="text" name="sum" onfocus="this.form.i1.focus()">
</form>

[Dan Drillich]

You might consider flipping onkeyup with onchange. So, the sum is changed only when the user finishes the number entry.

[danprhayes]

Thats brilliant.... many thanks.... despite doom and gloom and possibility of a war there will always be helpful and friendly people like you lot to answer our questions...

Have a happy life and be good..