Policy
Allow JavaScript to use JIT on these sites
Microsoft Edge
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows7
Allows you to set a list of site URL patterns that specify sites that are allowed to run JavaScript with JIT (Just In Time) compiler enabled. For detailed information on valid site URL patterns, see https://go.microsoft.com/fwlink/?linkid=2095322. Wildcards, *, are allowed. JavaScript JIT policy exceptions will only be enforced at a site granularity (eTLD+1). A policy set for only subdomain.contoso.com won't correctly apply to contoso.com or subdomain.contoso.com since they both resolve to the same eTLD+1 (contoso.com) for which there's no policy. In this case, policy must be set on contoso.com to apply correctly for both contoso.com and subdomain.contoso.com. This policy applies on a frame-by-frame basis and not based on top-level origin URL alone; so, for example, if contoso.com is listed in the JavaScriptJitAllowedForSites policy but contoso.com loads a frame containing fabrikam.com then contoso.com will have JavaScript JIT enabled, but fabrikam.com will use the policy from 'DefaultJavaScriptJitSetting' (Control use of JavaScript JIT), if set, or default to JavaScript JIT enabled. If you don't configure this policy for a site then the policy from 'DefaultJavaScriptJitSetting' applies to the site, if set, otherwise Javascript JIT is enabled for the site. Example value: [*.]example.edu
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 |
|---|---|---|---|---|---|
Allow JavaScript to use JIT on these sites ID JavaScriptJitAllowedForSitesDesc | list | Path Software\Policies\Microsoft\Edge\JavaScriptJitAllowedForSites Value name 1, 2, … Type REG_SZ | List: standard |