Google Chrome Extension Remove Element
I am trying to remove an element from a div on a third party website.
Such as
<div id="full_size_photo"&开发者_如何学编程gt;
<img src="img1">
<img src="img2">
</div>
var imageDiv = document.getElementById("full_size_photo");
imageDiv.removeChild(imageDiv.childNodes[i]);
imageDiv apparently has 5 children? :S When i is 1 img1 is removed properly. When i remove 3 and 4 img2 is removed...
Would someone be able to explain why this is?
As far as I understand I thought the first img tag would be 0 and the second would be 1?
Whitespace stretches are textNode
instances
Annotated example:
<div id="full_size_photo">[node 1 --
--]<img src="img1">[node 3 --
--]<img src="img2">[node 5 --
]</div>
Here's what you really want to do:
var div = document.getElementById("full_size_photo");
var images = div.getElementsByTagName("img");
div.removeChild(images[0]);
Hope this helps!
Most likely, the text nodes between the img
nodes are what is tripping you up. Try something like this:
var imgList = imageDiv.getElementsByTagName('img');
for (var i = imgList.length - 1; i >= 0; i--) {
imageDiv.removeChild(imgList[i]);
}
Two things to note here:
- We are just searching through the children that are
img
nodes, not all children - We are looping through backwards, since we are removing nodes (otherwise, after removing node 1, we would increment the index to 2, but the node that was previously in position 2 would now be in position 1, so it would be skipped).
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