javascript 使用 jQuery 更改 h-text
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Changing h- text with jQuery
提问by user2484181
I want to change the text of a h2. If I use alert, it shows undefined with .html and .val, so, wouldn't it be something like this?:
我想更改 h2 的文本。如果我使用警报，它会用 .html 和 .val 显示未定义，所以，它不会是这样的吗？：
$("#h2Id").text("new text");
$("#h2Id").text("new text");
It doesn't work, though. Thanks in advance.
但是，它不起作用。提前致谢。
edit: the html is plain simple, as I'm trying to understand why it doesn't work.
编辑：html 很简单，因为我试图理解为什么它不起作用。
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="jquery.js"></script>
<link href="css/estilos.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="testingStuff.js"></script>
</head>
<body>
<h2 id="question"> ASD </h2>
</body>
回答by Frambot
Make sure jQuery is loaded.
Use the document-ready incantation to let your script wait until the DOM is ready.
$(function() { $("#h2Id").text("new text"); });http://jsfiddle.netis a wonderful resource for quickly mocking up pages and finding problems.
确保 jQuery 已加载。
使用 document-ready 咒语让您的脚本等待 DOM 准备就绪。
$(function() { $("#h2Id").text("new text"); });http://jsfiddle.net是快速模拟页面和查找问题的绝佳资源。
回答by Mr. Polywhirl
<span id="h2Id">Foo</span>
$('#h2Id').text('Bar');
