Node.js N-API napi_create_arraybuffer

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Node.js N-API napi_create_arraybuffer

新增于: v8.0.0 N-API version: 1 napi_status napi_create_arraybuffer(napi_env env, size_t byte_length, void** data, napi_value* result) [in] env: The environment that the API is invoked under. [in] length: The length in bytes of the array buffer to create. [out] data: Pointer to the underlying byte buffer of the ArrayBuffer. [out] result: A napi_value representing a JavaScript ArrayBuffer. Returns napi_ok if the API succeeded.

This API returns an N-API value corresponding to a JavaScript ArrayBuffer. ArrayBuffers are used to represent fixed-length binary data buffers. They are normally used as a backing-buffer for TypedArray objects. The ArrayBuffer allocated will have an underlying byte buffer whose size is determined by the length parameter that’s passed in. The underlying buffer is optionally returned back to the caller in case the caller wants to directly manipulate the buffer. This buffer can only be written to directly from native code. To write to this buffer from JavaScript, a typed array or DataView object would need to be created.

JavaScript ArrayBuffer objects are described in Section 24.1 of the ECMAScript Language Specification.


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