JS::Construct 编辑

This article covers features introduced in SpiderMonkey 38

Call a specified JS constructor.

Syntax

bool
JS::Construct(JSContext *cx, JS::HandleValue fun,
            const JS::HandleValueArray& args,
            JS::MutableHandleValue rval);

Name	Type	Description
`cx`	`JSContext *`	Pointer to a JS context from which to derive runtime information. Requires request. In a `JS_THREADSAFE` build, the caller must be in a request on this `JSContext`.
`fun`	`JS::HandleValue`	Pointer to the function to call. Should be a native function or JSAPI-compiled function..
`args`	`JS::HandleValueArray &`	Arguments you are passing to the function.
`rval`	`JS::MutableHandleValue`	Out parameter. On success, `*rval` receives the newly created object from the constructor call.

JS::Construct calls a specified function as a constructor, fun.