jQuery 入门教程(14): 添加HTML元素
虾米姐
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2021-04-01 10:00:03
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使用jQuery可以方便的添加新的HTML元素。
下面的方法用于添加HTML元素:
- append() – 在指定的元素的尾部添加一个新内容。
- prepend() -在指定的元素里前部添加新内容。
- after() – 在指定元素后添加新内容
- before() -在指定元素的前面添加新内容。
乍一看append,prepend 和after,before似乎功能一样,但append,prepend指在选中的元素本身(内部)的前面和后面,而after,before指在选择中的元素的前面和后面。
可以参考下面的append例子:
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>JQuery Demo</title>
- <script src="scripts/jquery-1.9.1.js"></script>
- <script>
- $(document).ready(function () {
- $("#btn1").click(function () {
- $("p").append(" <b>Appended text</b>.");
- });
- $("#btn2").click(function () {
- $("ol").append("<li>Appended item</li>");
- });
- });
- </script>
- </head>
- <body>
- <p>This is a paragraph.</p>
- <p>This is another paragraph.</p>
- <ol>
- <li>List item 1</li>
- <li>List item 2</li>
- <li>List item 3</li>
- </ol>
- <button id="btn1">Append text</button>
- <button id="btn2">Append list items</button>
- </body>
- </html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JQuery Demo</title>
<script src="scripts/jquery-1.9.1.js"></script>
<script>
$(document).ready(function () {
$("#btn1").click(function () {
$("p").append(" <b>Appended text</b>.");
});
$("#btn2").click(function () {
$("ol").append("<li>Appended item</li>");
});
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<ol>
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
</ol>
<button id="btn1">Append text</button>
<button id="btn2">Append list items</button>
</body>
</html>
prepend示例:
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>JQuery Demo</title>
- <script src="scripts/jquery-1.9.1.js"></script>
- <script>
- $(document).ready(function () {
- $("#btn1").click(function () {
- $("p").prepend("<b>Prepended text</b>. ");
- });
- $("#btn2").click(function () {
- $("ol").prepend("<li>Prepended item</li>");
- });
- });
- </script>
- </head>
- <body>
- <p>This is a paragraph.</p>
- <p>This is another paragraph.</p>
- <ol>
- <li>List item 1</li>
- <li>List item 2</li>
- <li>List item 3</li>
- </ol>
- <button id="btn1">Prepend text</button>
- <button id="btn2">Prepend list item</button>
- </body>
- </html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JQuery Demo</title>
<script src="scripts/jquery-1.9.1.js"></script>
<script>
$(document).ready(function () {
$("#btn1").click(function () {
$("p").prepend("<b>Prepended text</b>. ");
});
$("#btn2").click(function () {
$("ol").prepend("<li>Prepended item</li>");
});
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<ol>
<li>List item 1</li>
<li>List item 2</li>
<li>List item 3</li>
</ol>
<button id="btn1">Prepend text</button>
<button id="btn2">Prepend list item</button>
</body>
</html>
append(),prepend()支持同时插入多个元素,下面的例子添加三个使用不同方法创建的新元素:
- function appendText()
- {
- // Create element with HTML
- var txt1="<p>Text.</p>";
- // Create with jQuery
- var txt2=$("<p></p>").text("Text.");
- // Create with DOM
- var txt3=document.createElement("p");
- txt3.innerHTML="Text.";
- // Append the new elements
- $("p").append(txt1,txt2,txt3);
- }
function appendText()
{
// Create element with HTML
var txt1="<p>Text.</p>";
// Create with jQuery
var txt2=$("<p></p>").text("Text.");
// Create with DOM
var txt3=document.createElement("p");
txt3.innerHTML="Text.";
// Append the new elements
$("p").append(txt1,txt2,txt3);
}
下面的例子使用after,before 在指定的元素前后面添加新内容:
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>JQuery Demo</title>
- <script src="scripts/jquery-1.9.1.js"></script>
- <script>
- $(document).ready(function () {
- $("#btn1").click(function () {
- $("img").before("<b>Before</b>");
- });
- $("#btn2").click(function () {
- $("img").after("<i>After</i>");
- });
- });
- </script>
- </head>
- <body>
- <img src="/images/guidebee.png"
- alt="guidebee" width="120" height="125">
- <br>
- <br>
- <button id="btn1">Insert before</button>
- <button id="btn2">Insert after</button>
- </body>
- </html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JQuery Demo</title>
<script src="scripts/jquery-1.9.1.js"></script>
<script>
$(document).ready(function () {
$("#btn1").click(function () {
$("img").before("<b>Before</b>");
});
$("#btn2").click(function () {
$("img").after("<i>After</i>");
});
});
</script>
</head>
<body>
<img src="/images/guidebee.png"
alt="guidebee" width="120" height="125">
<br>
<br>
<button id="btn1">Insert before</button>
<button id="btn2">Insert after</button>
</body>
</html>
同样after,before也支持同时插入多个元素:
- function afterText()
- {
- // Create element with HTML
- var txt1="<b>I </b>";
- // Create with jQuery
- var txt2=$("<i></i>").text("love ");
- // Create with DOM
- var txt3=document.createElement("big");
- txt3.innerHTML="jQuery!";
- // Insert new elements after img
- $("img").after(txt1,txt2,txt3);
- }
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