Firefox:Dive Into Greasemonkey/4.8. Inserting content after an element
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您的位置：Dive Into Greasemonkey → 公用模式 → 在元素后插入新内容
[编辑]
4.8. 在元素后插入新内容
如果您已经获得了一个元素，您还想在在这个元素后添加新内容。这时，您可以结合 nextSibling 属性，通过 insertBefore 这个函数来完成这个操作。
例子: 在 ID="navbar" 的元素（假如这个元素存在）之后插入<；hr >；
var navbar, newElement;
navbar = document.getElementById('navbar');
if (navbar) {
newElement = document.createElement('hr');
navbar.parentNode.insertBefore(newElement, navbar.nextSibling);
}
即使 someExistingElement 是它的父元素的最后一个孩子（在它之后没有下一个元素），仍然可以在 someExistingElement.nextSibling 之前插入新内容。在这种情况下，someExistingElement.nextSibling 将返回一个空值，insertBefore 函数将把新内容追加到最后。（也许这对你来说没有太大的意义，但我想让您知道的是，尽管这种方法似乎是不太对，但它总是有效的。
[编辑]
实例
- Blogdex Display Title (http://diveintogreasemonkey.org/download/blogdex-display-title.user.js)
- Butler (http://diveintomark.org/projects/butler/butler.user.js)
删除一个元素 →
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