jQuery ??
jQuery - ??? ? ?? ??
??? ?? - text(), html() ? val()
???? ???? ?? ?? ?? ??? ? ?? ??? ?????.
text() - ??? ??? ??? ??? ????? ?????.
html() - ??? ??? ??? ????? ?????(HTML ??? ??).
val() - ??? ??? ????? ?????. form ?? ?
?? ???? text(), html() ? val() ???? ?? ???? ???? ??? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
$("#test1").text("你好!");
});
$("#btn2").click(function(){
$("#test2").html("<b>你好!</b>");
});
$("#btn3").click(function(){
$("#test3").val("php.cn");
});
});
</script>
</head>
<body>
<p id="test1">這是一個(gè)段落。</p>
<p id="test2">這是另外一個(gè)段落。</p>
<p>輸入框: <input type="text" id="test3" value="php中文網(wǎng)"></p>
<button id="btn1">設(shè)置文本</button>
<button id="btn2">設(shè)置 HTML</button>
<button id="btn3">設(shè)置值</button>
</body>
</html>????? ???? ??? ???
text( ), html() ? val() ?? ??
?? ? ?? jQuery ???? text(), html() ? val()?? ?? ??? ????. ?? ??? ??? ?? ??? ?? ?? ??? ???? ??(??) ???? ? ?? ????? ?????. ?? ?? ??? ? ??? ????? ???? ?????.
?? ????? ?? ??? ??? text() ? html()? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
$("#test1").text(function(i,origText){
return "舊文本: " + origText + " 新文本: Hello world! (index: " + i + ")";
});
});
$("#btn2").click(function(){
$("#test2").html(function(i,origText){
return "舊 html: " + origText + " 新 html: Hello <b>world!</b> (index: " + i + ")";
});
});
});
</script>
</head>
<body>
<p id="test1">這是一個(gè)有 <b>粗體</b> 字的段落。</p>
<p id="test2">這是另外一個(gè)有 <b>粗體</b> 字的段落。</p>
<button id="btn1">顯示 新/舊 文本</button>
<button id="btn2">顯示 新/舊 HTML</button>
</body>
</html>????? ???? ??? ???
?? ?? - attr()
jQuery attr() ???? ?????. /Change ?? ?? ?????.
?? ???? ??? href ?? ?? ??(??)?? ??? ?????.
?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("#php").attr("href","http://www.baidu.com/");
});
});
</script>
</head>
<body>
<p><a href="http://ipnx.cn" id="php">php中文網(wǎng)</a></p>
<button>修改 href 值</button>
<p>點(diǎn)擊按鈕修改后，可以點(diǎn)擊鏈接查看鏈接地址是否變化。</p>
</body>
</html>????? ???? ??? ???.
attr() ???? ???? ??? ??? ? ????. ??? ?? ??? ?????.
?? ???? href ? title ??? ??? ???? ??? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("#php").attr({
"href" : "http://www.baidu.com",
"title" : "baidu"
});
});
});
</script>
</head>
<body>
<p><a href="http://ipnx.cn" id="php">php中文網(wǎng)</a></p>
<button>修改 href 和 title</button>
<p>點(diǎn)擊按鈕修改后，可以查看 href 和 title 是否變化。</p>
</body>
</html>????? ???? ??? ???
attr()
jQuery ??? attr()? ?? ??? ?? ??? ?????. ?? ??? ??? ?? ??? ?? ?? ??? ???? ??(??) ???? ? ?? ????? ?????. ?? ?? ??? ? ??? ????? ???? ?????.
?? ???? ?? ??? ??? attr() ???? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文網(wǎng)(php.cn)</title>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("#php").attr("href", function(i, origValue){
return origValue + "/course.html";
});
});
});
</script>
</head>
<body>
<p><a href="http://ipnx.cn" id="php">php中文網(wǎng)</a></p>
<button>修改 href 值</button>
<p>點(diǎn)擊按鈕修改后，可以點(diǎn)擊鏈接查看 href 屬性是否變化。</p>
</body>
</html>????? ???? ??? ???
