ECMAScript 5 6 7 intl non-standard compatibility table by kangax & webbedspace Sort by Engine types Features Flagged features Show obsolete platforms Show unstable platforms V8 SpiderMonkey JavaScriptCore Chakra Carakan KJS Other ⬤ Minor difference (1 point) ⬤ Useful feature (2 points) ⬤ Significant feature (4 points) ⬤ Landmark feature (8 points) Compilers/polyfills Desktop browsers Servers/runtimes Mobile Feature name Current browser TABLE HEADERS Traceur Babel + core-js [1] ES6 Trans- piler Closure JSX [2] Type- Script + core-js es6- shim IE 10 IE 11 Edge 12 [3] Edge 13 [3] FF 31 FF 32 FF 33 FF 34 FF 35 FF 36 FF 37 FF 38 ESR FF 39 FF 40 FF 41 FF 42 FF 43 FF 44 FF 45 CH <19 CH 35, OP 22 [0] CH 36, OP 23 [0] CH 37, OP 24 [0] CH 38, OP 25 [0] CH 39, OP 26 [0] CH 40, OP 27 [0] CH 41, OP 2...