Traversing/API/jQuery - Sample Code
filter(fn)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="/jquery/js/jquery.js"></script>
<script>
$(document).ready(function(){
$("div").css("background", "#b4b0da")
.filter(function (index) {
return index == 1 || $(this).attr("id") == "fourth";
})
.css("border", "3px double red");
});
</script>
<style>
div { width:60px; height:60px; margin:5px; float:left;
border:3px white solid; }
</style>
</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>
</body>
</html>
[実行結果]