如何使用JavaScript将网页高度增加X像素 [英] How to increase the page height by X pixels by using only javascript
问题描述
假设有一个HTML网页：
Assume an HTML page:
<html>
<body>
.. html content (outside of our control) ..
.. javascript block ..
.. some more html content (outside of our control) ..
</body>
</html>
进一步假设，我们能够控制的HTML页面的唯一部分是一个javascript块
Assume further that the only part of the HTML page that we're able to control is a javascript block in the middle of the page.
使用该javascript块，如何通过填充页面底部将总页面高度增加150像素？
Using that javascript block, how do I increase the total page height by 150 pixels by "padding" the bottom of the page?
如果我可以改变HTML，一个简单的解决方案是：
If I could alter the HTML a simple solution would be:
<html>
<body>
.. html content (outside of our control) ..
.. javascript block ..
.. some more html content (outside of our control) ..
<div style="height: 150px; clear: both;"></div>
</body>
</html>
但是我怎么才能通过使用javascript块才能实现呢？
But how do I achieve this only by using the javascript block?
理想的解决方案应该是跨浏览器兼容和100％内联（即不使用javascript库）。
The ideal solution should be cross-browser compatible and 100 % inline (that is using no javascript library).
更新＃1 ： JavaScript块可以访问整个页面的DOM。
Update #1: The javascript block has access to the entire DOM of the page.
更新＃2：页面总长度（更改DOM之前）会有所不同。
Update #2: The total length of the page (before altering the DOM) varies.
更新3：假设没有javascript库。
Update #3: Assume that no javascript library (such as the otherwise excellent jQuery) can be used.
推荐答案
更新代码：
var space = document.createElement('div');
space.style.height = "150px";
space.style.clear = "both";
document.getElementsByTagName("body")[0].appendChild(space);
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