greasemonkey

I would like to capture the contents of AJAX requests using Greasemonkey. Does anybody know how to do this? The accepted answer is almost correct, but it could use a slight improvement: (function(open) { XMLHttpRequest.prototype.open = function() { this.addEventListener("readystatechange", function() { console.log(this.readyState); }, false); open.apply(this, arguments); }; })(XMLHttpRequest.prototype.open); Prefer using apply + arguments over call because then you don't have to explicitly know all the arguments being given to open which could change! How about modifying the XMLHttpRequest

I have an application that has a certain page -- let's call it Page A. Page A is sometimes a top-level page, but also sometimes is embedded as an iframe within page B. All pages come from the same server and there are no cross-domain issues. I have a greasemonkey script that runs on page A. How can the greasemonkey script detect whether page A is within the iframe context or not? Looking at frame length breaks down generally if page A itself has frames (I know this might not be the case for this specific instance). The more reliable and meaningful test would be: if (window!=window.top) { /* I

The information I need is in a meta tag. How can I access the "content" data of the meta tag when property="video" ? HTML: <meta property="video" content="http://video.com/video33353.mp4" /> Saket You can use this: function getMeta(metaName) { const metas = document.getElementsByTagName('meta'); for (let i = 0; i < metas.length; i++) { if (metas[i].getAttribute('name') === metaName) { return metas[i].getAttribute('content'); } } return ''; } console.log(getMeta('video')); joepio The other answers should probably do the trick, but this one is simpler and does not require jQuery: document.head