I have developed an add-on for Firefox and Chrome. It has content scripts. I want to access them in the browser tab's console (on Firefox the Web Console). For example, I want to enter a global variable defined in the content script(s) in the con...
I'm wondering how the sequence shown below could possibly occur.  Here is the function in question:  WebSocketConnector.prototype.sendMessage = function(message) {     if (socket !== null) {         socket.send(message);         console.log('...
Does anybody know how to break on a XHR request on Firefox developer tools? Earlier in firebug I added breakpoints under Net panel. As the firebug is discontinued any workaround for Firefox developer tools is appreciated....
I've been trying to add the highlighting feature to the Firefox DevTools debugger, so it will highlight the element instead of only showing [HTMLAnchorElement] or similar. I know it's possible, since you can set someElement.style.border='...
I noticed something odd in the Memory inspector of both Chrome and Firefox. On a large page, it will tell you how much various JavaScript objects take up, but doesn't seem to list any image/multimedia objects. In fact, in this screenshot taking f...
I'm using Firefox v47 on a Mac. I've worked out how to get the Debugger to use JavaScript source maps to show where I'm triggering some code, but it uses the compiled file in the Console. How do I get it to show me the uncompiled file lin...
I'm looking at my balance on Venmo.com but they only show you 3 months at a time and I'd like to get my entire transaction history.  Looking at the Chrome Developer Tools, under the network tab, I can see the request to https://api.venmo.com/...
I'm doing quite a bit of work in the developer tools, and like to use jQuery in the console to run code snippets. To inject jQuery into the page (and the console), I'm pasting this into the devtools console:  var j = document.createElement(&#...
I'm attempting to write a bookmarklet-like js snippet that can be run from the developer tools console that will provide the src for images in the page:  var x = ["PA633", "PA10", "PA11"]; function nextPage(i) {     $('...
I noticed that qUnit doesn't give any notice when an exception happens in a later part of the test. For example, running this in a test():  stop(); function myfun(ed) {     console.log('resumed');     start(); //Resume qunit     ok(1,'...

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