Devtools Status Detector

Allows Javascript Developers to know when Chrome Devtools is open/closed.

This extension helps Javascript developers detect when Chrome Devtools is open or closed on current page. When Chrome Devtools closes/opens, the extension will raise a event named 'devtoolsStatusChanged' on window.document element. This is example code: function addEventListener(el, eventName, handler) { if (el.addEventListener) { el.addEventListener(eventName, handler); } else { el.attachEvent('on' + eventName, function() { handler.call(el); }); } } // Add an event listener. addEventListener(document, 'devtoolsStatusChanged', function(e) { if (e.detail === 'OPENED') { // Your code when Devtools opens } else { // Your code when Devtools Closed } }); Please leave a comment if you have questions or ideas.