I believe that “Not optimized: optimized too many times” refers to when the chrome optimizer keeps reoptimizing a function. https://groups.google.com/forum/#!topic/v8-users/_oZ4fUSitRY If I recall correctly, there are several things that can cause this including parameters that change type, I’ll try to dig up the link. This one is somewhat cryptic and fixes will depend on your … Read more
In Chrome Developer Tools switch to the Network tab and on the Size column it will either give you the size of the downloaded content or say (from disk/memory cache).
In Chrome Dev Tools: If you go to Settings>Overrides>Device metrics If you swap the dimensions for the screen resolution the orientation will change and the orientationchange-event will be triggered. The orientation is depending on the relationship between ‘width’ and ‘height’. If ‘height’ has a higher value than ‘width’, the browser will be in orientation: ‘portrait’ … Read more
I searched for the XPath of the element instead and it worked: //*[@class=”item”]
I don’t know when this was added, but it is present in Safari on El Capitan (Safari 9.0). It works the same as in Chrome (right click in the console window and select “Keep Log on Navigation”). Update: As per Daniel Compton’s answer, in Safari 11+ this is now under the settings icon as ‘Console: … Read more
To check the current page’s cookies using Chrome: Option 1 Open Developer Tools (usually F12) Click the “Application” tab (used to be “Resources”) Expand the “Cookies” list item Click any list item. You can view cookies in detail here, and clear them out (click any list item under cookies then click the cancel icon on … Read more
If it’s inside a closure, i’m pretty sure you can’t. Otherwise you just do functionName(); and hit return.
Use console.dir: var element = document.documentElement; // or any other element console.log(element); // logs the expandable <html>…</html> console.dir(element); // logs the element’s properties and values If you’re inside the console already, you could simply type dir instead of console.dir: dir(element); // logs the element’s properties and values To simply list the different property names (without … Read more
in my case the order helped was close the blank tab in sources close dev tools open dev tools open the tab in sources(its still blank) refresh page
I fixed this problem by adding a meta tag to my page: <meta name=”viewport” content=”width=device-width”> UPDATE (December 2019): It looks like you may also need to set the initial scale and minimum scale, like so: <meta name=”viewport” content=”width=device-width, initial-scale=1, minimum-scale=1″ />