Retrieves the JavaScript version number used within a specified executable script context.
语法
JSVersion JS_GetVersion(JSContext *cx);
| 参数名称 | 类型 | 描述 |
|---|---|---|
cx |
JSContext * |
要查询的上下文. |
描述
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.