how to insert value in input, with javascript

Question

So I tried to do something like this -

$('#price').val(price);

price is 300, and it shows good on browser, in input field, but when I want to take it out and mail it with PHP, in $_POST['price'] it doesn't show up, How can I insert something in inputs value with JavaScript, so I can mail it? It seems this is not an insertion in value, but just a feature to display something, correct?

The input field has name, is inside <form> tags, it's POST, it's got unique ID and it's readonly. — user1184908
– user1184908, Commented Feb 13, 2012 at 16:29
<input type="text" style="color: green; width:268px;" readonly name="price" id="price" /> — user1184908
– user1184908, Commented Feb 13, 2012 at 16:31

cong88 · Accepted Answer · 2017-06-30 17:01:13Z

3

Maybe this code can help you

document.getElementById('yorInputID').value = "Your Value";

answered Jun 30, 2017 at 17:01

cong88

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Mike Thomsen · Accepted Answer · 2012-02-13 16:26:09Z

1

There are a few possible reasons:

1) Your input field is not inside the form.
2) You are actually using a GET and not a POST.

Assuming that you can see the value updated in Firebug or Chrome's equivalent, it's gotta be one of those. Switch over to using $_REQUEST and see if that changes anything.

answered Feb 13, 2012 at 16:26

Mike Thomsen

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user1184908 Over a year ago

Thanks, you helped me solve the problem, since I misspeled the word "price" in defining the value, lol :)!

Mikhail · Accepted Answer · 2012-02-13 16:27:49Z

0

Your input for #price needs to also have a name "price"

<input id="price" value="price" />

From your question I'm assuming that this input is hidden -- and if that's the case I want to advise you not to rely on hidden fields + Javascript to provide you with security. It's so easily hackable I wouldn't even call it hacking.

answered Feb 13, 2012 at 16:27

Mikhail

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Pablo Martinez · Accepted Answer · 2012-02-13 17:03:51Z

0

Make sure the input is not "disabled" when the form submits.

if it's disabled the form don't send it.

answered Feb 13, 2012 at 17:03

Pablo Martinez

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