Radio button on Press Echo

[SeanFromIT]

Inside of an HTML form, does anyone know how to echo something immediately if a radio button with a certain value is pressed, without submitting the HTML form?

[fert]

Javascript or Ajax

[JasonLewis]

i'd say javascript though. thats what javascript was sort of designed for.

 

<form action="page.php" method="POST" name="form">
Click the checkbox: <input type="checkbox" value="Hello" name="checkbox" onclick="javascript: alert('Value: '+document.form.checkbox.value);">
</form>

 

that should work. thats how i'd do it.

[HuggieBear]

"Javascript or Ajax..." I'd say javascript though. thats what javascript was sort of designed for.

 

For a start, what do you think the 'J' in aJax stands for, so by suggesting one over the other, you possibly haven't quite grasped the concept of it yet.

 

In addition, my above comment aside, how can you make such an assumption without knowing what s/he wants to display.

 

Suppose the radio button is a "Select your free gift" on the order form of their website... when they click the radio button the poster wants to check the database to see if there's any of that gift in stock, and if not display an image of a cross next to the button, or a tick if it is in stock.

 

How do you do that in just Javascript alone?

 

Regards

Huggie