I'm trying to write a Chrome extension that as a part of what it's doing needs to add an image to the currently displayed html. I guess I need to use document.createElement and then insert it somewhere, but I'm not sure about two things:
The image es as part of the extension, i.e. there's no direct link to it anywhere, so simply adding an img tag won't work. Unless I'm missing something.
Not Chrome-related at all: what is the best way to add the img tag to a specific location if the html elements do NOT have any id's? I can find the place I want to add the img to using regexps, and can rewrite the whole html if needed, but maybe there's a more subtle way I'm missing.
I'm trying to write a Chrome extension that as a part of what it's doing needs to add an image to the currently displayed html. I guess I need to use document.createElement and then insert it somewhere, but I'm not sure about two things:
The image es as part of the extension, i.e. there's no direct link to it anywhere, so simply adding an img tag won't work. Unless I'm missing something.
Not Chrome-related at all: what is the best way to add the img tag to a specific location if the html elements do NOT have any id's? I can find the place I want to add the img to using regexps, and can rewrite the whole html if needed, but maybe there's a more subtle way I'm missing.
1 Answer
Reset to default 11You can get image url from your extension folder by running:
var imgUrl = chrome.extension.getURL("image.png");
(it would look like this: chrome-extension://<extension_id>/image.png)
If you're using manifest-version: 2 you'll need to whitelist any resource in your extension that you inject into other documents. See this question for more info.
As to your second question - you need to provide more details. Does it have class? Do you know inside what tag is it (li, div)? You probably would be better off using jQuery for this - it has lots of pretty advanced selectors. I don't know what search criteria are you trying to use exactly so I can't suggest a concrete solution.