flyfloor

// add to Preferences > Key Bindings - User
// see http://stackoverflow.com/a/26619524 for context

{ "keys": ["tab"], "command": "expand_abbreviation_by_tab",
  "context": [
    {
      "operand": "source.js", 
      "operator": "equal", 
      "match_all": true, 
      "key": "selector"