Retrieves the JavaScript version number used within a specified executable script context.


JS_GetVersion(JSContext *cx);
Name Type Description
cx JSContext * The context to query.


JS_GetVersion returns the JavaScript version currently used by the given JSContext, cx. The result is one of the JSVersion constants.

When a context is created, its version is initially JSVERSION_DEFAULT. Scripts are compiled using the latest version of the JavaScript language. To configure a context to run scripts using a specific version of JavaScript, use JS_SetVersion.

See Also