All these methods can be used in a WebExtension's content script. It's because the case we're looking at is where the URL was changed via history. Another approach depending on how you are changing the div. If you are using JQuery to change a div's contents with its html method, you can extend that method and call a registration function each time you put html into a div.
We just intercept the calls to html , call a registration function with this, which in the context refers to the target element getting new content, then we pass on the call to the original jquery. Remember to return the results of the original html method, because JQuery expects it for method chaining. Also check out the plugins tutorial at JQuery's site. So if you're, for instance, waiting for a certain element to be inserted, it may be deep inside the children of mutations.
Another problem is when your own code, in reaction to mutations, changes DOM - you often want to filter it out. A good convenience library that solves such problems is mutation-summary disclaimer: I'm not the author, just a satisfied user , which enables you to specify queries of what you're interested in, and get exactly that. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 11 years, 6 months ago. Active 7 months ago. Viewed k times. Mike Fletcher Moore Fletcher Moore Does this answer your question? Detect changes in the DOM — Lucio. Add a comment. Active Oldest Votes.
MutationObserver window. Riley Lambert. Several years later, there is now officially a better solution. They are currently implemented in modern browsers as MutationObserver or as the vendor-prefixed WebKitMutationObserver in old versions of Chrome :. This example listens for DOM changes on document and its entire subtree, and it will fire on changes to element attributes as well as structural changes.
The draft spec has a full list of valid mutation listener properties :. Alfie Mellor. This answer is now deprecated. See the answer by apsillers. See the support for this event across browsers. It has been supported in Chrome since 1. See a working example here. Brooke Giles. We just intercept the calls to html , call a registration function with this, which in the context refers to the target element getting new content, then we pass on the call to the original jquery.
Remember to return the results of the original html method, because JQuery expects it for method chaining. John David. Another problem is when your own code, in reaction to mutations, changes DOM - you often want to filter it out. Dylan Iqbal. Abigale Yundt. If you wanted to learn Web Development back in the day, learning jQuery was an absolute given.
This was mainly because jQuery took much of the cross-browser compatibility issues out and enabled developers to write code without having to worry about whether the features that they are implementing will work on all browsers.
We just launched W3Schools videos. Get certified by completing a course today! If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. Use the on method instead. Attaches a handler to current, or future, specified child elements of the matching elements die Removed in version 1.
Removes all event handlers added with the live method error Removed in version 3. Adds one or more event handlers to current, or future, selected elements load Removed in version 3.
Attaches two or more functions to toggle between for the click event trigger Triggers all events bound to the selected elements triggerHandler Triggers all functions bound to a specified event for the selected elements unbind Deprecated in version 3. Use the off method instead.
Removes an added event handler from selected elements undelegate Deprecated in version 3. Removes an event handler to selected elements, now or in the future unload Removed in version 3. Attaches an event handler to the unload event.
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