Opera中的Document.body [英] Document.body in Opera
问题描述
我在检索到body标签的链接时遇到了问题.我尝试过:
I've got a problem with retrieving link to the body tag. I've tried:
-
document.body，很遗憾，它为空 - 在枚举文档的子元素时按tagName搜索正文，但仅找到head标签:(
-
document.getElementsByTagName，返回未定义
document.body, unfortunately it is null- search body by tagName while enumerating childs of document, it's found only the head tag :(
document.getElementsByTagName, return undefined
我正在尝试在onload事件处理程序中获取指向body标签的链接.这是页面的HTML代码:
I'm trying to get link to the body tag in onload event handler. This is a HTML code of the page:
<html>
<head>
<title>Some page</title>
<script src="/adv.js" type="text/javascript"></script>
</head>
<body>
This is text
</body>
</html>
这是adv.js的源代码:
(function () {
var myRandom = function (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
};
var myFunction = function () {
var newScriptAddr = '/adLoader.js?r=' + myRandom(1,1000000);
var fileref = document.createElement('script');
if (typeof fileref != "undefined")
{
fileref.setAttribute("type", "text/javascript");
fileref.setAttribute("src", newScriptAddr);
document.getElementsByTagName("head")[0].appendChild(fileref);
}
};
if (window.onload)
{
var currOnLoad = window.onload;
window.onload = function () {
currOnLoad();
myFunction();
};
}
else
window.onload = myFunction();
}) ();
adLoader.js的源代码:
(function () {
var mainCnt = document.createElement('div');
mainCnt.appendChild(document.createTextNode('The text'));
var _body = document.body;
if (!_body)
{
var htmlTag = document.documentElement;
for(var i = 0; i < htmlTag.childNodes.length; i++)
{
if (htmlTag.childNodes[i].nodeName.toLowerCase() == 'body')
{
_body = htmlTag.childNodes[i];
break;
}
}
}
if (!_body)
_body = document.getElementsByTagName('BODY') [0];
if (!_body)
_body = document.getElementsByTagName('body') [0];
if (_body)
_body.appendChild(mainCnt);
else
alert('WTF!!');
}) ();
浏览器是Opera 11.10 OS Ubuntu Linux.有没有办法获得此链接?我的目的是将带有position:fixed的div添加到body标签.
Browser is Opera 11.10 OS Ubuntu Linux. Is there way to get this link? My aim is to add div with position:fixed to the body tag.
推荐答案
myFunction()不返回函数，因此您正在将undefined分配给window.onload.您可能是说window.onload = myFunction;
myFunction() doesn't return a function, so you are assigning undefined to window.onload. You probably mean window.onload = myFunction;
无论如何，如目前所写，代码会立即运行，并且没有到达body元素.
Anyway, as written at the moment, the code runs immediately and the body element hasn't been reached.
这篇关于Opera中的Document.body的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
