Примеры для jQuery .filter()


Change the color of all divs; then add a border to those with a "middle" class.

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>filter demo</title>
<style>
div {
width: 60px;
height: 60px;
margin: 5px;
float: left;
border: 2px white solid;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<div></div>
<div class="middle"></div>
<div class="middle"></div>
<div class="middle"></div>
<div class="middle"></div>
<div></div>
<script>
$( "div" )
.css( "background", "#c8ebcc" )
.filter( ".middle" )
.css( "border-color", "red" );
</script>
</body>
</html>

Демонстрация:

Change the color of all divs; then add a border to the second one (index == 1) and the div with an id of "fourth."

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>filter demo</title>
<style>
div {
width: 60px;
height: 60px;
margin: 5px;
float: left;
border: 3px white solid;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<div id="first"></div>
<div id="second"></div>
<div id="third"></div>
<div id="fourth"></div>
<div id="fifth"></div>
<div id="sixth"></div>
<script>
$( "div" )
.css( "background", "#b4b0da" )
.filter(function( index ) {
return index === 1 || $( this ).attr( "id" ) === "fourth";
})
.css( "border", "3px double red" );
</script>
</body>
</html>

Демонстрация:

Select all divs and filter the selection with a DOM element, keeping only the one with an id of "unique".

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$( "div" ).filter( document.getElementById( "unique" ) );

Select all divs and filter the selection with a jQuery object, keeping only the one with an id of "unique".

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$( "div" ).filter( $( "#unique" ) );