napi_has_element
napi_status napi_has_element(napi_env env,
napi_value object,
uint32_t index,
bool* result); -
[in] env:调用 Node-API 调用的环境。¥
[in] env: The environment that the Node-API call is invoked under. -
[in] object:要查询的对象。¥
[in] object: The object to query. -
[in] index:要检查其存在的属性的索引。¥
[in] index: The index of the property whose existence to check. -
[out] result:该属性是否存在于对象上。¥
[out] result: Whether the property exists on the object or not.
如果 API 成功,则返回 napi_ok。
¥Returns napi_ok if the API succeeded.
如果传入的 Object 在请求的索引处有一个元素,则此 API 返回。
¥This API returns if the Object passed in has an element at the
requested index.