什么是jQuery的替代品（'：not（selector）'）？

Question

What is the jQuery alternative to not(':not( selector )')?

Basically lets say this:

var buttons = $('a.buttons');

I am looking for a particular button with the href as '#measurement' and need to add a class to it. The only way I know how to do this is with not(':not( selector )').

buttons.not(':not([href="#measurement"])').addClass('selected');

There has got to be a better way.

.is() // returns boolean
.has() // looks for items inside each element

Any thing out there?

Answer 1

The 2 not s cancel out, and you get

$('a.buttons[href="#measurement"]').addClass('selected');

Docs: http://api.jquery.com/category/selectors/attribute-selectors/

EDIT: If you already have a collection, use .filter

var buttons = $('a.buttons');
buttons.filter('[href="#measurement"]').addClass('selected');

Answer 2

I believe you want filter :

$elements.filter(selector)

so if you already have

var $buttons = $('a.buttons');

you can get the right one by

var $theButtonIWant = $buttons.filter('[href*="#measurement"]');

Answer 3

var button = $('a.buttons[href*="#measurement"]').addClass('selected');

The [ ] block lets you specify an attribute. The *= operator in it specifies that the attribute contains the quoted text.