4 ms·

And same with ECMAScript 3 to 5.

• WorldMaker 7y ago
  There was an ECMAScript 4, it just wasn't adopted by browsers. (It was semi-adopted for ActionScript 3.)
  • girvo 7y ago
    I thought the relationship went the other way, that AS 3 was going to be standardised as ECMAScript 4? Not that it matters, I’m likely remembering incorrectly!
    • WorldMaker 7y ago
      Standards are a two-way street, and we're probably both right from different points of view. (Especially, because AS 2 also had a number of the features proposed for ES 4, so even if AS 3 was "solely" inspired to be an implementation of the ES 4 standard, ES 4 itself took inspiration from AS 2.)