In Chrome this is possible, but I don't find a way to do it in Safari. Is it possible? How?...
When I call this line:  Object.getOwnPropertyDescriptor(HTMLElement.prototype,"innerHTML")    For FireBug it returns:  >>> Object.getOwnPropertyDescriptor(HTMLElement.prototype,"innerHTML")    where for IE, Developer Tools it...
I have a utility function that wraps console.log with a condition, so we only call console.log if we're in the dev environment and console.log exists:  /* Console log if environment has debug true or #debug initially passed in URL */ metro.conlog...
I'm looking for a way to open the WebKit “developer tools” from a script attached to a web-page. I need solutions for both Google Chrome and Safari, that will open the developer-tools pane if it's not already open, and (hopefully, if you...
To make debugging easier, I'm capturing all of the console logs in Chrome so that users who submit a feedback entry will also submit all of the logs to our server.  When someone encounters a problem in production, I can first and foremost get the...
Unknown script action (probably async) causes page reload.  How can I find this action in the code?  At least, is there any way to set breakpoint on access to window.location? But I'm not sure that navigation is forced in such way.  In fact I nee...
I followed this tutorial to expose React as global in Webpack. The Expose module is installed & I added the module loader in config webpack.config.js file. However, its not working & React Developer Tools are still not accessible.  Here is my...
When using Safari Web Inspector to read the JavaScript console output, the log is reset upon navigation i.e. going from page index.html to mail.html clears the console output. In the Chrome Developer Tools, I can easily preserve the log by right clic...
When debugging a React website, I can view the component hierarchy using the React Developer Tools:    How can I do the same in React Native? The rage shake menu contains an 'inspector' but it only seems to let me inspect a single element by...
When I use the Developer Tools in Chrome to collect JavaScript CPU Profiles, I am getting two mysterious warnings on functions:   Not optimized: optimized too many times Not optimized: inlining bailed out   What do these actually mean? and what are s...

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