How can I auto-check a checkbox when a corresponing textfield is edited? For example, when textfield1 is clicked on or edited, checkbox1 will automatically "tick". Anyone know of a link or tutorial on how to do so? I've googled it, though the closest I could find was the "check-all/un-check all" method. Thanks

if they're in the same form, add this on the text field: <input onfocus="this.form.THECHECKBOXNAME.checked=true" type="text" name="etc... --- JakartaSpot.com

Thanks for your help. I gave it a try, though it doesn't seem to work. I'm getting the error: 'this.form.checkbox.225' is null or not an object I guess I should have mentioned that it's an array of checkboxes, each with a unique identifier given to it by PHP code. The checkbox is formed like: <input name="checkbox[<?php echo $row['id'];?>]" type="checkbox"... My input field code with your javascript: <input onfocus="this.form.checkbox[<?php echo $row['id'];?>].checked=true" type="text" name="e_price[<? echo $row['id'];?>]... Looking at the HTML (below), it looks like I'm getting the right results, though for some reason it won't work. Any ideas? <td><div align="center"><input name="checkbox[225]" type="checkbox" value="225"></div></td> <td><input onfocus="this.form.checkbox[225].checked=true" type="text" name="sym[225]" value="AAPL"></td> <td><input onfocus="this.form.checkbox[225].checked=true" onclick="ds_sh(this);" name="e_date[225]" value="2007-05-22" readonly="readonly" style="cursor: text" /></td> <td width="125"><input onfocus="this.form.checkbox[225].checked=true" type="text" name="e_price[225]" value="85.45"></td>

Hi, I'm not sure on how to refer (in JavaScript) to a field name with box brackets. It might be possible, but maybe not. Can somebody confirm? But if I need to create something like yours, I'll refer to the field ID, or by using those "JavaScript object thingy" :D Like "on focus, look at parent node's first checkbox, then mark it as checked". Anyways, take a look here, view the source, and the PHP source. It's the first example (referring to the checkbox ID). The wrapped JavaScript function - checkTheBox(boxID) - is used to minimize potential headaches when doing these things in a not-so-simple applications. --- JakartaSpot.com

Thanks. It's weird, I tried your examples and I received the desired results (by changing the parenthesis to brackets in the jscript function), in the HTML code at least, though it still doesn't auto-check. Oh well.

> by changing the parenthesis to brackets in the jscript function can't do that. it must read like this: getElementByID(ID_of_the_object) Maybe you're confusing name and ID? in my example, the checkbox field name is "checkbox[1]" and the ID is "c1", and so on. 'c' + boxID will be parsed as "c1", and so on... Forget the first part of my previous message. I read it again, and I'm confused -_- Just check and try to recreate the sample. I think it's quite similar with your apps, including your PHP. --- JakartaSpot.com

You're a genious! It works. I overlooked the little "c" in front of the checkbox ID. It works like a gem - thanks for your help.