NativeScript V8 JavaScriptCore
Minor difference (1 point) Small feature (2 points) Medium feature (4 points) Large feature (8 points)
NativeScript Desktop browsers
Feature name Current browser NS 6.0 Android
v8
NS 6.1 Android
v8
NS Next Android
v8
NS 6.0 iOS
JavaScriptCore
NS 6.1 iOS
JavaScriptCore
NS Next iOS
v8
CH 77,
OP 64
CH 79,
OP 66
SF 13 Beta SF TP
§SIMD (Single Instruction, Multiple Data) MDN (Mozilla Development Network) logo  0/57 0/57 0/57 0/57 0/57 0/57 0/57 0/57 0/57 0/57
§basic support MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Float32x4 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Int32x4 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Int16x8 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Int8x16 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Uint32x4 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Uint16x8 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Uint8x16 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Bool32x4 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Bool16x8 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Bool8x16 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.abs MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.add MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%integerType%.addSaturate MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.and MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%booleanType%.anyTrue MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%booleanType%.allTrue MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.check MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.equal MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.extractLane MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.greaterThan MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.greaterThanOrEqual MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.lessThan MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.lessThanOrEqual MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.mul MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.div MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.load MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.load1 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.load2 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.load3 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.max MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.maxNum MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.min MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.minNum MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.neg MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.not MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.notEqual MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.or MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.reciprocalApproximation MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.reciprocalSqrtApproximation MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.replaceLane MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.select MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%integerType%.shiftLeftByScalar MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%integerType%.shiftRightByScalar MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.shuffle MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.splat MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%floatType%.sqrt MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.store MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.store1 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.store2 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.store3 MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.sub MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%integerType%.subSaturate MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.swizzle MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.xor MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.fromTIMDBits MDN (Mozilla Development Network) logo  No No No No No No No No No No
§SIMD.%type%.fromTIMD MDN (Mozilla Development Network) logo  No No No No No No No No No No
§decompilation 0/4 0/4 0/4 0/4 0/4 0/4 0/4 0/4 0/4 0/4
§uneval, existence MDN (Mozilla Development Network) logo  No No No No No No No No No No
§built-in "toSource" methods MDN (Mozilla Development Network) logo  No No No No No No No No No No
§"toSource" method as hook for uneval No No No No No No No No No No
§eval(uneval(value)) is functionally equivalent to value No No No No No No No No No No
§optional "scope" argument of "eval" No No No No No No No No No No
§function "caller" property MDN (Mozilla Development Network) logo  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
§function "arity" property MDN (Mozilla Development Network) logo  No No No No No No No No No No
§function "arguments" property MDN (Mozilla Development Network) logo  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
§Function.prototype.isGenerator MDN (Mozilla Development Network) logo  No No No No No No No No No No
§class extends null No No No No No No No No No No
§__count__ MDN (Mozilla Development Network) logo  No No No No No No No No No No
§__parent__ MDN (Mozilla Development Network) logo  No No No No No No No No No No
§__noSuchMethod__ MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Array generics No No No No No No No No No No
§String generics No No No No No No No No No No
§Array comprehensions (JS 1.8 style) MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Array comprehensions (ES draft style) MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Expression closures MDN (Mozilla Development Network) logo  No No No No No No No No No No
§ECMAScript for XML (E4X) MDN (Mozilla Development Network) logo  No No No No No No No No No No
§"for each..in" loops MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Sharp variables MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Iterator MDN (Mozilla Development Network) logo  No No No No No No No No No No
§__iterator__ No No No No No No No No No No
§Generators (JS 1.8) No No No No No No No No No No
§Generator comprehensions (JS 1.8 style) No No No No No No No No No No
§Generator comprehensions (ES draft style) No No No No No No No No No No
§RegExp "x" flag No No No No No No No No No No
§Callable RegExp No No No No No No No No No No
§RegExp named groups No No No No No No No No No No
§String.prototype.quote MDN (Mozilla Development Network) logo  No No No No No No No No No No
§String.prototype.replace flags MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Date.prototype.toLocaleFormat MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Date.parse produces NaN for invalid dates No No No Yes Yes No No No Yes Yes
§Object.prototype.watch MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Object.prototype.unwatch MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Object.prototype.eval MDN (Mozilla Development Network) logo  No No No No No No No No No No
§Object.observe MDN (Mozilla Development Network) logo  No No No No No No No No No No
§error "stack" MDN (Mozilla Development Network) logo  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
§error "lineNumber" MDN (Mozilla Development Network) logo  No No No No No No No No No No
§error "columnNumber" MDN (Mozilla Development Network) logo  No No No No No No No No No No
§error "fileName" MDN (Mozilla Development Network) logo  No No No No No No No No No No
§error "description" No No No No No No No No No No
§global 1/2 1/2 1/2 1/2 1/2 1/2 0/2 0/2 0/2 0/2
§"global" global property is global object Yes Yes Yes Yes Yes Yes No No No No
§"global" global property has correct property descriptor No No No No No No No No No No
Thanks to Kangax, webspacedspace, zloirock and the rest of the people who contributed to Kangax ES Compatibility Table

This site uses the base of the awesome compat-table and adds all the code to handle the additional testing on the NativeScript runtimes, and ability to export the data and collate it back to these tables...