Description:
The
filter( fn ) method filters all elements from the set of matched elements that do not match the specified function.
Syntax:
Here is the simple syntax to use this method:
selector.filter( selector )
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Parameters:
Here is the description of all the parameters used by this method:
- fn: The function is called with a context equal to the current element just like $.each. If the function returns false, then the element is removed otherwise the element is kept.
Example:
Following is an example showing a simple usage of this method:
<html>
<head>
<title>the title</title>
<script type="text/javascript"
src="/jquery/jquery-1.3.2.min.js"></script>
<script type="text/javascript" language="javascript">
$(document).ready(function() {
$("li").filter(function (index) {
return index == 1 || $(this).attr("class") == "middle";
}).addClass("selected");
});
</script>
<style>
.selected { color:red; }
</style>
</head>
<body>
<div>
<ul>
<li class="top">list item 1</li>
<li class="top">list item 2</li>
<li class="middle">list item 3</li>
<li class="middle">list item 4</li>
<li class="bottom">list item 5</li>
<li class="bottom">list item 6</li>
</ul>
</div>
</body>
</html>
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This would generate following result:
<html>
<head>
<title>the title</title>
<script type="text/javascript"
src="/jquery/jquery-1.3.2.min.js"></script>
<script type="text/javascript" language="javascript">
$(document).ready(function() {
$("li").filter(function (index) {
return index == 1 || $(this).attr("class") == "middle";
}).addClass("selected");
});
</script>
<style>
.selected { color:red; }
</style>
</head>
<body>
<div>
<ul>
<li class="top">list item 1</li>
<li class="selected">list item 2</li>
<li class="selected">list item 3</li>
<li class="selected">list item 4</li>
<li class="bottom">list item 5</li>
<li class="bottom">list item 6</li>
</ul>
</div>
</body>
</html>
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