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jQuery - ?? ??

? HTML ??? ??

? ???? ???? ? ?? jQuery ???? ?????.

append() - ??? ??? ?? ??? ??

prepend() - ??? ??? ?? ??? ??? ??

after( ) - ??? ?? ?? ?? ??

before() - ??? ?? ?? ?? ??

<!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(){
    $("p").append(" <b>追加文本</b>。");
  });
  $("#btn2").click(function(){
    $("ol").append("<li>追加列表項</li>");
  });
});
</script>
</head>
<body>
<p>段落。</p>
<p>另一個段落。</p>
<ol>
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
</ol>
<button id="btn1">添加文本</button>
<button id="btn2">添加列表項</button>
</body>
</html>

prepend() ???

jQuery prepend() ???? ??? ??? ?? ??? ??? ?????.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文網(wǎng)(php.cn)</title>
<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(){
$("p").prepend("<b>在開頭追加文本</b>。 ");
});
$("#btn2").click(function(){
$("ol").prepend("<li>在開頭添加列表項</li>");
});
});
</script>
</head>
<body>
<p>段落。</p>
<p>另一個段落。</p>
<ol>
<li>列表 1</li>
<li>列表 2</li>
<li>列表 3</li>
</ol>
<button id="btn1">添加文本</button>
<button id="btn2">添加列表項</button>
</body>
</html>

append() ? prepend() ???? ????? ?? ???? ? ??? ??? ? ????. ???/HTML? ?? ?? ?? jQuery? ?? ????? JavaScript ?? ? DOM ??? ?? ??? ? ????.


after() ? before()

jQuery after() ???? ??? ?? ?? ??? ?????.

jQuery before() ???? ??? ?? ?? ???? ?????.

<!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(){
    $("span").before("<b>之前</b>");
  });
  $("#btn2").click(function(){
    $("span").after("<i>之后</i>");
  });
});
</script>
</head>
<body>
<span style="font-size: 30px;">內(nèi)容</span>
<br><br>
<button id="btn1">之前插入</button>
<button id="btn2">之后插入</button>
</body>
</html>

after() ? before() ???? ????? ?? ???? ? ??? ??? ? ????. ??? ??? ???/HTML, jQuery ?? JavaScript/DOM? ?? ??? ? ????.

???? ??
||
<!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 type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $("p").append(" <b>Hello jQuery!</b>"); }); }); </script> </head> <body> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <button>在每個 p 元素的結(jié)尾添加內(nèi)容</button> </body> </html>