Javascript 使用 jQuery 在特定位置查找元素？
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Using jQuery to find an element at a particular position?
提问by Thomas John
Is there a method in jQuery to select an element located at a particular position?
jQuery 中是否有一种方法可以选择位于特定位置的元素？
For example, can I select the element that is located at left:100 and top:300 in absolute position?
例如，我可以选择绝对位置位于 left:100 和 top:300 的元素吗？
It would be nice if I could select an element located in a range of positions, for example, select the element that is located left: 100 - 150 px top 200 - 280px.
如果我可以选择位于一系列位置的元素，那就太好了，例如，选择位于左侧的元素：100 - 150 px top 200 - 280px。
回答by jAndy
You are looking for the .elementFromPoint()JavaScript/DOM method.
您正在寻找.elementFromPoint()JavaScript/DOM 方法。
var elem = document.elementFromPoint(100, 100) // x, y
That returns a DOM node, which of course then can be wrapped into a jQuery object:
这将返回 a DOM node，当然可以将其包装到 jQuery 对象中：
$(elem).remove(); // for instance
I'm not that aware about the cross-browser compatibility and I would like some guys who know better to edit this post or write a comment about it.
我不太了解跨浏览器的兼容性，我希望一些更了解的人编辑这篇文章或写一篇评论。
Reference: .elementFromPoint()
Example Link: http://www.jsfiddle.net/YjC6y/22/
回答by Cees Timmerman
Provided you know the exact coordinates relative to the document:
如果您知道相对于文档的确切坐标：
function getElsAt(top, left){
return $("body")
.find("*")
.filter(function() {
return $(this).offset().top == top
&& $(this).offset().left == left;
});
}
The other answer stops at the first overlay.
另一个答案在第一个叠加层处停止。
