Attribute existence([attr])

Description and Syntax

$('[attr]')

selects all elements that have the attr attribute, with any value.

Examples

Selector	Selects
`$('[rel]')`	all elements that have a `rel` attribute
`$('.myclass[style]')`	all elements with the class `myclass` that have a style attribute

The following code selects elements with id attribute.


<html>
  <head>
    <script src="http://java2s.com/style/jquery-1.8.0.min.js"></script>
    <script type="text/javascript">
    $(document).ready(function(){<!--   www.j  av a 2  s.com-->
          $("div[id]").one("click", function(){
              var idString = $(this).text() + " = " + $(this).attr("id");
              $(this).text(idString);
          });
    });
    </script>
  </head>
  <body>
      Click to see.
      <div>div</div>
      <div id="hey">div</div>
  </body>
</html>

Click to view the demo

The code above generates the following result.

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      jQuery Selector

...
Selector syntax
ID
Tag Name
Class Name
Descendant $('E F')
Child (E > F)
General sibling (E ~ F)
Multiple expressions (E, F, G)
Universal (*)
Filtering by Relationships
Numbered child (:nth-child(n/even/odd/expr)...
First child (:first-child)
Last child (:last-child)
Only child (:only-child)
Not (:not(E))
Empty (:empty)
Attribute selectors

Attribute existence([attr])

Attribute equals ([foo=bar])
Attribute not equal ([foo!=bar])
Attribute begins with ([foo^=bar])
Attribute ends with ([foo$=bar])
Attribute contains ([foo*=bar])
Attribute contains word ([foo~=bar])
Attribute contains prefix ([foo|=bar])
Attribute exists $("[attributeName*='value'...
Form selector
Form input selector (:input)
Form text fields (input:text)
Form Password field (input:password)
Form Radio button (input:radio)
Form Checkbox (input:checkbox)
Form Submit button (input:submit)
Form Image button (input:image)
Form Reset button (input:reset)
Form button (input:button)
Form File upload (input:file)
Form Enabled form element (input:enabled)
...