Question

I’m trying update some values for some hidden input boxes, but I’m not very successful.
I have no problem doing this to visible input[type=text].

Here is a small example: http://jsfiddle.net/saHCU/

Use Firebug to see the hidden fields.

You can see the value added to the text box for item_id3. But when you look at the source, none of the text boxes has an updated value.

Why is this not updated?

Answer 1

Because it does not change the attribute, but the underlying property.

The HTML value attribute can be considered more like a “starting point”, what really matters is the property itself (element.value = 1 in Javascript). If you try to submit your form, or query the value with Javascript, you will see that is has actually changed, so your code is working fine.

• .prop() vs .attr() on StackOverflow

Also, as far as my knowledge goes, there is not input type="textbox", only input type="text".