javascript没有在页面加载时执行? [英] javascript not executing on page load?
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问题描述
在我的HTML中:
<head>
<link href="/prop-view.css" media="screen" rel="stylesheet" type="text/css">
<script src="/javascripts/jquery-1.3.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
var $j = jQuery.noConflict();
</script>
<script src="/prop-view.js" type="text/javascript"></script>
:
$j("<div class='dk-logo'></div>").appendTo("body");
检查员没有显示任何错误。但图像没有显示出来。但是,当我将该行复制并粘贴到控制台时。所以...我的猜测是在文档完全加载之前js文件正在运行?
The inspector shows no errors. But the image doesn't show up. It does, however, when I copy and paste that line into the console. So... my guess is the js file is running before the document is fully loaded?
推荐答案
确保DOM已加载首先这样做:
Make sure the DOM is loaded first by doing this:
$j(function() {
$j("<div class='dk-logo'></div>").appendTo("body");
});
这是jQuery的快捷方式 ready()
功能。在< body>
标记完全加载之前,不会执行内部代码。
This is a shortcut for jQuery's ready()
function. The code inside is not executed until the <body>
tag is fully loaded.
因为你放置了在 < body>
标记之前的代码,还没有< body>
要追加的。
Because you were placing the code before the <body>
tag, there was no <body>
yet to which to append.
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