So I have someone else's old code that I am trying to restore. I am not too familiar with jQuery, but what does the @ operator specify?

The code is:

v_button_format = $('#' + v_form_id).find('input[@name=button_format]').val();
v_content_type = $('#' + v_form_id).find('input[@name=content_type]').val();

I am using jQuery 1.3 and it's throwing an "uncaught exception: Syntax error, unrecognized expression: [@name=button_format]" error. Is there a patibility issue?

So I have someone else's old code that I am trying to restore. I am not too familiar with jQuery, but what does the @ operator specify?

The code is:

v_button_format = $('#' + v_form_id).find('input[@name=button_format]').val();
v_content_type = $('#' + v_form_id).find('input[@name=content_type]').val();

I am using jQuery 1.3 and it's throwing an "uncaught exception: Syntax error, unrecognized expression: [@name=button_format]" error. Is there a patibility issue?

• javascript
• jquery
• operators

7 Answers 7

This is an attribute selector.

The @ is an XPath-ism that is no longer used in jQuery.
In addition, newer versions of jQuery require the attribute value to be in quotes.

Therefore, you should write

$('#' + v_form_id).find('input[name="content_type"]').val();

That means attribute. input[@name=button_format] means the input tag with the name attribute equal to button_format.

You will need to remove the @ and quote button_format in recent versions jQuery, however. This means @ is not backwards patible. So quoth the docs.

Note: In jQuery 1.3 [@attr] style selectors were removed (they were previously deprecated in jQuery 1.2). Simply remove the “@” symbol from your selectors in order to make them work again.

 input[@name=button_format]

means the input field with the name-attribute set to 'button_format', ie:

 <input name="button_format">

Note: In jQuery 1.3 [@attr] style selectors were removed (they were previously deprecated in jQuery 1.2). Simply remove the '@' symbol from your selectors in order to make them work again.

it's a deprecated selector, you have to remove it from your code as it's no longer supported and will cause errors.

That's the OLD way of doing it.

It is the same as (and should be changed to):

$('input[name="button_format"]')

Also note the mandatory quotes

Attribute as others mentioned.

My 2-cents: The notation is inspired from XPath, which also denotes (XML) attributes using an @

input[@name=button_format]

This is old selector type.please remove if @ if you using jQuery latest new way is

input[name="button_format"]