napi_get_value_int32


napi_status napi_get_value_int32(napi_env env,
                                 napi_value value,
                                 int32_t* result) 
  • [in] env:调用 API 的环境。

    ¥[in] env: The environment that the API is invoked under.

  • [in] valuenapi_value 代表 JavaScript number

    ¥[in] value: napi_value representing JavaScript number.

  • [out] result:给定的 JavaScript number 的 C int32 基础类型等价物。

    ¥[out] result: C int32 primitive equivalent of the given JavaScript number.

如果 API 成功,则返回 napi_ok。如果在 napi_number_expected 中传递了非数字 napi_value

¥Returns napi_ok if the API succeeded. If a non-number napi_value is passed in napi_number_expected.

此 API 返回给定 JavaScript number 的 C int32 基础类型等价物。

¥This API returns the C int32 primitive equivalent of the given JavaScript number.

如果该数字超出 32 位整数的范围,则结果将被截断为与底部 32 位等效的值。如果该值 > 231,这可能会导致较大的正数变成负数 - 1.

¥If the number exceeds the range of the 32 bit integer, then the result is truncated to the equivalent of the bottom 32 bits. This can result in a large positive number becoming a negative number if the value is > 231 - 1.

非有限数值(NaN+Infinity-Infinity)将结果设置为零。

¥Non-finite number values (NaN, +Infinity, or -Infinity) set the result to zero.