Browser Compatibility Testing of JAVASCRIPT const

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Google Chrome

Chrome browser version 4 to Chrome browser version 48 partially supports and partiall support for Chrome refers to supporting an older version of the browser. Chrome version 49 to 70 supports JAVASCRIPT const.

Mozilla Firefox

Mozilla Firefox browser version 2 to Mozilla Firefox browser version 35 partially supports JAVASCRIPT const and partial support for Firefox refers to suppporting an older version of the browser. Firefox version 36 to 63 supports JAVASCRIPT const.

Internet Explorer

Internet Explorer browser version 6 to Internet Explorer browser version 10 doesn't supports. Internet Explorer browser version 11 supports JAVASCRIPT const.


Safari browser version 3.1 to Safari browser version 9.1 doesn't supports. Safari browser version 10 to Safari browser version 12 suppoprts JAVASCRIPT const.

Microsoft Edge

Microsoft Edge browser version 12 to 18 supports JAVASCRIPT const property.


Opera version 10.1 and 35 partially supports JAVASCRIPT constand partial support for Opera refers to the supportiing an older verrsion of the browser. Opera version 36 to 53 supports JAVASCRIPT const.

Information sourced from

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

  • Google Chrome
  • Mozilla
  • Edge
  • IE
  • opera
  • Safari
  • Yandex

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