javascript document.body 为空或不是对象
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document.body is null or not an object
提问by san
I am getting Java script error while loading page: document.body is null or not an object. URL: https://admit-uat.belgacom.be/WCE/ESW/selectBundle/productId/bun_nettv_go
加载页面时出现 Java 脚本错误：document.body 为空或不是对象。网址：https: //admit-uat.belgacom.be/WCE/ESW/selectBundle/productId/bun_nettv_go
Can you please let me know what is the issue.
你能告诉我是什么问题吗？
回答by Hyman Dsilva
<head>
<script type="text/javascript" charset="utf-8">
// wait for the DOCUMENT to become ready.
window.onload=function(){
walkmydog()
}
</script>
</head>
Here's a detailed explanation for overcoming this sort of problem: http://www.javascriptkit.com/dhtmltutors/domready.shtml
这是克服此类问题的详细说明：http: //www.javascriptkit.com/dhtmltutors/domready.shtml
回答by ErickBest
May be late but helpful...
可能会迟到但很有帮助...
You have to make sure you are calling the document.body after the <body>tag is loaded not before it.
您必须确保在<body>加载标签之后而不是在它之前调用 document.body 。
This WILL NOT work:
这将不起作用：
<html>
<head>
<script>
document.body.onload = function(){
alert('document Loaded');
}
</script>
</head>
<body>
</body>
</html>
This WILL work
这将工作
<head>
</head>
<body >
<script>
document.body.onload = function(){
alert('document Loaded');
}
</script>
</body>
</html>
This also WILL work
这也将工作
</head>
<body onload = "function foo(){
alert('document Loaded');
} foo();">
</body>
</html>
However, if you insist of having the Javascriptbefore the <body>tag, You could go for jQuery's
但是，如果您坚持Javascript在<body>标签之前使用，则可以选择jQuery's
$(function(){
//.....Your code here.
})
This is also one way to guard against cross-browser issues.
这也是防止跨浏览器问题的一种方法。
Hop that helps!
跳有帮助！
