Map() is not defined in Google Chrome

Question

I\'ve been searching for an answer but I\'m only getting results regarding the Google maps API. I\'m trying to use a map in JavaScript to map an integer to a string. Everyth

Answer 1

Some ES harmony features, including Map(), did already exist in Chrome at the end of 2011. It's just disabled by default.

To enable the feature, visit chrome://flags/, and enable "Enable experimental JavaScript". Then restart the browser and enjoy the new features.

An alternative method is to pass the --js-flags=--harmony flag on the command line. For instance:

chromium --js-flags=--harmony
chrome.exe --jsflags=--harmony