:button Selector
jQuery(':button')Description: Selects all button elements and elements of type button.
An equivalent selector to $(":button") using valid CSS is $("button, input").
Additional Notes:
Because :button is a jQuery extension and not part of the CSS specification, queries using :button cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :button to select elements, first select the elements using a pure CSS selector, then use .filter(":button").
Example:
Find all button inputs and mark them.
<!DOCTYPE html>
<html>
<head>
<style>
textarea { height:35px; }
div { color: red; }
fieldset { margin: 0; padding: 0; border-width: 0; }
.marked { background-color: yellow; border: 3px red solid; }
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<form>
<fieldset>
<input type="button" value="Input Button"/>
<input type="checkbox" />
<input type="file" />
<input type="hidden" />
<input type="image" />
<input type="password" />
<input type="radio" />
<input type="reset" />
<input type="submit" />
<input type="text" />
<select><option>Option<option/></select>
<textarea></textarea>
<button>Button</button>
</fieldset>
</form>
<div>
</div>
<script>
var input = $(":button").addClass("marked");
$("div").text( "For this type jQuery found " + input.length + "." );
$("form").submit(function () { return false; }); // so it won't submit
</script>
</body>
</html>
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