Using Brackets for Ext JS Development

Recently I evaluated using Brackets, a free, open-source, multiplatform-editor as a potential replacement for Sublime Text in our Javascript training courses.
Brackets has a lot going for it:

  • It’s free
  • Installation is simple
  • It’s open source
  • Projects are directory-based, just like Sublime
  • It has a js linter built in
  • It has some intellisense
  • It does *not* auto-complete array and object syntax (brackets and curly braces)
  • It supports scss (Sassy CSS)
  • Performance doesn’t completely suck
  • It’s supports 3rd Party Plugins
  • It’s available for multiple OS.

And while it doesn’t fully support Sencha’s massive Ext JS library, it should help students quickly identify syntax problems with their json configs. I was able to configure Bracket’s built-in JS Linter to ignore nearly all of its “false-positive” errors and warnings.

The trick is to modify Bracket’s preferences file (Debug > Open Preferences File) as follows:

    "linting.collapsed": false,
    "themes.theme": "light-theme",
    "jslint.options": {
        "plusplus": true,
        "devel": true,
        "predef": [
        "sloppy": true,
        "browser": true,
        "white": true
    "useTabChar": false

You’ll need to restart Brackets for these changes to take effect.

So if you’re looking for a change of pace from using Sublime, or money is tight and you can’t afford JetBrains WebStorm or Sencha Architect, it’s worth giving Brackets a try.

Download Brackets at

Happy coding!

3 thoughts on “Using Brackets for Ext JS Development

  1. Jim Pickering

    Thanks for this article. I too have switched to using brackets and adjusted my preferences file per your recommendations. Another thing I did is list my application namespaces in the predef array too, along with “Ext.”


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