jQuery ??
jQuery?? HTML ??? ??? ???? ??? ??? ????.
jQuery DOM ??
jQuery?? ?? ??? ??? DOM? ???? ?????.
jQuery? ??? ??? ?? ????? ??? ? ?? ??? DOM ?? ???? ?????.
DOM = ?? ?? ??
DOM? HTML ? XML ??? ????? ?? ??? ?????.
"W3C ?? ?? ??? ????? ????? ??? ???? ????? ????? ? ??? ?? ??? ? ?? ???? ????????. "
??? ???? - text(), html() ? val()
DOM ??? ?? ? ?? ???? ???? jQuery ??:
text( ) - ??? ???? ????? ?????. selected element
html() - ??? ??(HTML ?? ??)? ??? ?? ?? ??
val() - ?? ??? ? ?? ?? ??
?? ???? ??? ?????. jQuery text() ? html() ???? ?? ???? ?????:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
alert("Text: " + $("#test").text());
});
$("#btn2").click(function(){
alert("HTML: " + $("#test").html());
});
});
</script>
</head>
<body>
<p id="test">這是段落中的 <b>粗體</b> 文本。</p>
<button id="btn1">顯示文本</button>
<button id="btn2">顯示 HTML</button>
</body>
</html>????? ???? ??? ???.
?? ???? jQuery val() ???? ?? ?? ??? ?? ???? ??? ?????.
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<head>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert("值為: " + $("#test").val());
});
});
</script>
</head>
<body>
<p>名稱: <input type="text" id="test"></p>
<button>顯示值</button>
</body>
</html>????? ???? ??? ???.
?? ???? - attr()
jQuery attr() ???? ???? ?? ?? ?????.
?? ???? ???? href ?? ?? ???? ??? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
alert($("#tr").attr("href"));
});
});
</script>
</head>
<body>
<p><a href="http://ipnx.cn" id="tr">PHP中文網(wǎng)</a></p>
<button>顯示 href 屬性的值</button>
</body>
</html>????? ???? ??? ???
