I know how to do it in Firefox – how do I see Javascript errors in Chrome?
Google-chrome – Javascript error console in Chrome
google-chromejavascript
Related Solutions
Click on the address bar —yea the "omnibox", if you prefer a cooler name— and type chrome://settings/content.
(Alternatively, go Settings and type “javascript” into the search box.)
You can disable JavaScript by selecting “Do not allow any site to run JavaScript”:
It autosaves; you don't have to click Done or anything else.
Indeed, we don't even need a mouse to disable JavaScript and get back to the current page:
CtrlT
chrome:settingsEnterjavascriptTab EnterTab x 6, ▼
Lastly, CtrlW to close
Settings.
should take about 5 seconds.
You could do something like:
javascript:x=3;alert(x)
Or:
javascript:x=3;document.write(x)
At least on Chrome for OS X, neither of these work on the new tab page; you must first open any other page first. Loading about:blank does just fine.
Best Answer
You have following options:
Chrome: Press Ctrl+Shift+J (Cmd+Option+J on Mac) and it will give similar functionality. Also consider checking out JavaScript debugger in Chrome. Hitting F12 works as well.
IE7: Nothing built in. But have a look at IE Developer Toolbar.
IE8: Just hit F12 and you will get access to some very capable built-in tools. Error console is on Script tab.
Firefox: Just use FireBug.
Opera: Press Ctrl+Shift+I (Cmd+Option+I on Mac) to launch Opera Drangonfly which is a fully featured development and debugging tool integrated into the Opera browser.
Safari: Enable the Developer Menu from Safari's preferences. It will give access the various tools (Error Console, Web Inspector, JavaScript Profiler, etc). Of course there are also shortcuts, like Cmd+Alt+C for the console.