JS-3, JS3, or variation, may refer to: JS-3 heavy tank, the "Josef Stalin 3" Soviet WWII tank Ligier JS3, French sportscar racecar built by Ligier from 1971 ECMAscript 3.0 (JS3.0), JavaScript standard, see JavaScript JScript 3.0 (MS JS 3.0), Microsft Javascript variant, see JScript Jonker JS-3 Rapture, a glider See also JSSS (JavaScript Style Sheets) 3JS, Dutch band Three.js, crossplatform Javascript browser library WinJS 3.0, Windows Library for JavaScript JS (disambiguation)