Chrome-extension Javascript to detect dynamically-loaded content

Question

I\'m implementing a chrome extension app. I want to replace href attribute in tag (on my webapp\'s homepage) with \"#\". The problem is that the tag might

Answer 1

The accepted answer is outdated. As of now, 2019, Mutation events are deprecated. People should use MutationObserver. Here is how to use it in pure javascript:

// Select the node that will be observed for mutations
var targetNode = document.getElementById('some-id');

// Options for the observer (which mutations to observe)
var config = { attributes: true, childList: true, subtree: true };

// Callback function to execute when mutations are observed
var callback = function(mutationsList, observer) {
    for(var mutation of mutationsList) {
        if (mutation.type == 'childList') {
            console.log('A child node has been added or removed.');
        }
        else if (mutation.type == 'attributes') {
            console.log('The ' + mutation.attributeName + ' attribute was modified.');
        }
    }
};

// Create an observer instance linked to the callback function
var observer = new MutationObserver(callback);

// Start observing the target node for configured mutations
observer.observe(targetNode, config);

// Later, you can stop observing
observer.disconnect();