JS::Call 编辑
This article covers features introduced in SpiderMonkey 17
Call a specified JS function.
Syntax
bool
JS::Call(JSContext *cx, JS::HandleObject thisObj, JS::HandleFunction fun,
const JS::HandleValueArray &args, JS::MutableHandleValue rval);
bool
JS::Call(JSContext *cx, JS::HandleObject thisObj, const char *name,
const JS::HandleValueArray& args, JS::MutableHandleValue rval);
bool
JS::Call(JSContext *cx, JS::HandleObject thisObj, JS::HandleValue fun,
const JS::HandleValueArray& args, JS::MutableHandleValue rval);
bool
JS::Call(JSContext *cx, JS::HandleValue thisv, JS::HandleValue fun,
const JS::HandleValueArray& args, JS::MutableHandleValue rval);
bool
JS::Call(JSContext *cx, JS::HandleValue thisv, JS::HandleObject funObj,
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. |
thisObj | JS::HandleObject / JS::HandleValue | The "current" object on which the function operates; the object specified here is "this" when the function executes. |
fun / funObj | JS::HandleFunction / JS::HandleValue / JS::HandleObject | Pointer to the function to call. Should be a native function or JSAPI-compiled function. |
name | const char * | Pointer to the function name to call. |
args | JS::HandleValueArray & | Arguments to pass to the function. |
rval | JS::MutableHandleValue | Out parameter. On success, *rval receives the return value from the function call. |
Description
JS::Call calls a specified function, fun, on an object, thisObj. In terms of function execution, the object is treated as this.
For more detail, see JS_CallFunction, JS_CallFunctionName, and JS_CallFunctionValue.
See Also
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