With Firefox I can type in the location bar "javascript:" followed by some JavaScript code and have this code executed and the result displayed in the page. For example javascript:x = 3 displays 3 in the page.

However with Chrome nothing is displayed. Is there a way to do this in Chrome?


You could do something like:




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.

  • Nope, doesn't work for me. Or it doesn't work if I paste the string. Typing it in seems to work. Google's autocomplete seems to be interfering and won't turn off. Makes it feel like IE. – Malvolio Oct 19 '11 at 22:37
  • chrome doesn't like spaces: so javascript: x=3; alert(x); is different from javascript:x=3; alert(x). The former doesn't work, the latter does. – user257309 Sep 25 '13 at 13:34

Start Chrome with the --enable-user-scripts command line option.

Then javascript: URLs will work fine!

  • 2
    This is not actually necessary, at least on OS X. Entering javascript:window.alert("hello"); works just fine without it. – Daniel Beck Jun 30 '12 at 18:43

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