jQuery ?? - ??
jQuery ?? - ?? ??
?? ??? ??, ??, ??? ????.
jQuery? ???? DOM ??? ???? ??? ??? ?? ? ????.
DOM ?? ??? ??
??? DOM ?? ??? ???? ? ?? jQuery ??????.
children()
find()
jQuery children() ???
children() ???? ?? ?? ??? ?????. ??? ???
? ??? DOM ??? ? ?? ???? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.descendants *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("div").children().css({"color":"red","border":"2px solid red"});
});
</script>
</head>
<body>
<div class="descendants" style="width:500px;">div (當前元素)
<p>p (兒子元素)
<span>span (孫子元素)</span>
</p>
<p>p (兒子元素)
<span>span (孫子元素)</span>
</p>
</div>
</body>
</html>jQuery find() ???
find() ???? ??? ??? ?? ??? ??? ?? ???? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.descendants *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("div").find("span").css({"color":"red","border":"2px solid red"});
});
</script>
</head>
<body>
<div class="descendants" style="width:500px;">div (當前元素)
<p>p (兒子元素)
<span>span (孫子元素)</span>
</p>
<p>p (兒子元素)
<span>span (孫子元素)</span>
</p>
</div>
</body>
</html>
