| ChakraCoreJavaScriptCoreSpiderMonkeyV8Moddable XS |
|---|
 | JSON242 tests | 95% ChakraCore: 85%JavaScriptCore: 92%SpiderMonkey: 100%V8: 100%Moddable XS: 98% |
|---|
 | JSON.parse124 tests/built-ins/JSON/parse/ | 95% ChakraCore: 83%JavaScriptCore: 95%SpiderMonkey: 100%V8: 100%Moddable XS: 100% |
| JSON.stringify106 tests/built-ins/JSON/stringify/ | 94% ChakraCore: 86%JavaScriptCore: 88%SpiderMonkey: 100%V8: 100%Moddable XS: 96% |
 | JSON must be a built-in object SD 15.12-0-1.js |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
| JSON must not support the [[Construct]] method SD 15.12-0-2.js |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
| JSON must not support the [[Call]] method SD 15.12-0-3.js |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
| JSON object's properties must be non enumerable SD 15.12-0-4.js |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
| prop-desc.js SD |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
| Symbol.toStringTag.js SD |
ChakraCore: 2 of 2JavaScriptCore: 2 of 2SpiderMonkey: 2 of 2V8: 2 of 2Moddable XS: 2 of 2 |
Test262