Policy
Control use of JavaScript JIT
Microsoft Edge
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows7
Allows you to set whether Microsoft Edge runs the v8 JavaScript engine with JIT (Just In Time) compiler enabled or not. Disabling the JavaScript JIT means that Microsoft Edge can render web content more slowly, and can also disable parts of JavaScript including WebAssembly. Disabling the JavaScript JIT can allow Microsoft Edge to render web content in a more secure configuration. This policy can be overridden for specific URL patterns using the 'JavaScriptJitAllowedForSites' (Allow JavaScript to use JIT on these sites) and 'JavaScriptJitBlockedForSites' (Block JavaScript from using JIT on these sites) policies. If you don't configure this policy, JavaScript JIT is enabled. Policy options mapping: * AllowJavaScriptJit (1) = Allow any site to run JavaScript JIT * BlockJavaScriptJit (2) = Do not allow any site to run JavaScript JIT Use the preceding information when configuring this policy.
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
Control use of JavaScript JIT ID DefaultJavaScriptJitSetting | enum | Path Software\Policies\Microsoft\Edge Value name DefaultJavaScriptJitSetting Type REG_DWORD | Options: Allow any site to run JavaScript JIT (1), Do not allow any site to run JavaScript JIT (2) |