公共基础库子系统JS API变更
OpenHarmony 3.2 Beta3版本相较于OpenHarmony 3.2 Beta2版本，公共基础库子系统的API变更如下:
接口变更
| 模块名 | 类名 | 方法/属性/枚举/常量 | 变更类型 |
|---|---|---|---|
| ohos.buffer | Blob | text(): Promise<string>; | 新增 |
| ohos.buffer | Blob | slice(start?: number, end?: number, type?: string): Blob; | 新增 |
| ohos.buffer | Blob | arrayBuffer(): Promise<ArrayBuffer>; | 新增 |
| ohos.buffer | Blob | type: string; | 新增 |
| ohos.buffer | Blob | size: number; | 新增 |
| ohos.buffer | Blob | constructor(sources: string[] |ArrayBuffer[] |TypedArray[] |DataView[] |Blob[] , options?: Object); | 新增 |
| ohos.buffer | Buffer | writeUIntLE(value: number, offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | writeUIntBE(value: number, offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | writeUInt32LE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeUInt32BE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeUInt16LE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeUInt16BE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeUInt8(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeIntLE(value : number, offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | writeIntBE(value: number, offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | writeInt32LE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeInt32BE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeInt16LE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeInt16BE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeInt8(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeFloatLE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeFloatBE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeDoubleLE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeDoubleBE(value: number, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeBigUInt64LE(value: bigint, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeBigUInt64BE(value: bigint, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeBigInt64LE(value: bigint, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | writeBigInt64BE(value: bigint, offset?: number): number; | 新增 |
| ohos.buffer | Buffer | write(str: string, offset?: number, length?: number, encoding?: string): number; | 新增 |
| ohos.buffer | Buffer | toString(encoding?: string, start?: number, end?: number): string; | 新增 |
| ohos.buffer | Buffer | toJSON(): Object; | 新增 |
| ohos.buffer | Buffer | swap64(): Buffer; | 新增 |
| ohos.buffer | Buffer | swap32(): Buffer; | 新增 |
| ohos.buffer | Buffer | swap16(): Buffer; | 新增 |
| ohos.buffer | Buffer | subarray(start?: number, end?: number): Buffer; | 新增 |
| ohos.buffer | Buffer | readUIntLE(offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | readUIntBE(offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | readUInt32LE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readUInt32BE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readUInt16LE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readUInt16BE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readUInt8(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readIntLE(offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | readIntBE(offset: number, byteLength: number): number; | 新增 |
| ohos.buffer | Buffer | readInt32LE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readInt32BE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readInt16LE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readInt16BE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readInt8(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readFloatLE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readFloatBE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readDoubleLE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readDoubleBE(offset?: number): number; | 新增 |
| ohos.buffer | Buffer | readBigUInt64LE(offset?: number): bigint; | 新增 |
| ohos.buffer | Buffer | readBigUInt64BE(offset?: number): bigint; | 新增 |
| ohos.buffer | Buffer | readBigInt64LE(offset?: number): bigint; | 新增 |
| ohos.buffer | Buffer | readBigInt64BE(offset?: number): bigint; | 新增 |
| ohos.buffer | Buffer | lastIndexOf(value: string |number |Buffer |Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number; | 新增 |
| ohos.buffer | Buffer | entries(): IterableIterator<[number, number]>; | 新增 |
| ohos.buffer | Buffer | values(): IterableIterator<number>; | 新增 |
| ohos.buffer | Buffer | keys(): IterableIterator<number>; | 新增 |
| ohos.buffer | Buffer | indexOf(value: string |number |Buffer |Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number; | 新增 |
| ohos.buffer | Buffer | includes(value: string |number |Buffer |Uint8Array, byteOffset?: number, encoding?: BufferEncoding): boolean; | 新增 |
| ohos.buffer | Buffer | equals(otherBuffer: Uint8Array |Buffer): boolean; | 新增 |
| ohos.buffer | Buffer | copy(target: Buffer |Uint8Array, targetStart?: number, sourceStart?: number, sourceEnd?: number): number; | 新增 |
| ohos.buffer | Buffer | compare(target: Buffer |Uint8Array, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): -1 |0 |1; | 新增 |
| ohos.buffer | Buffer | fill(value: string |Buffer |Uint8Array |number, offset?: number, end?: number, encoding?: BufferEncoding): Buffer; | 新增 |
| ohos.buffer | Buffer | byteOffset: number; | 新增 |
| ohos.buffer | Buffer | buffer: ArrayBuffer; | 新增 |
| ohos.buffer | Buffer | length: number; | 新增 |
| ohos.buffer | buffer | function transcode(source: Buffer |Uint8Array, fromEnc: string, toEnc: string): Buffer; | 新增 |
| ohos.buffer | buffer | function compare(buf1: Buffer |Uint8Array, buf2: Buffer |Uint8Array): -1 |0 |1; | 新增 |
| ohos.buffer | buffer | function isEncoding(encoding: string):boolean; | 新增 |
| ohos.buffer | buffer | function isBuffer(obj: Object): boolean; | 新增 |
| ohos.buffer | buffer | function from(array: number[]): Buffer; function from(arrayBuffer: ArrayBuffer |SharedArrayBuffer, byteOffset?: number, length?: number): Buffer; function from(buffer: Buffer |Uint8Array): Buffer; function from(object: Object, offsetOrEncoding: number |string, length: number): Buffer; function from(string: String, encoding?: BufferEncoding): Buffer; | 新增 |
| ohos.buffer | buffer | function concat(list: Buffer[] |Uint8Array[], totalLength?: number): Buffer; | 新增 |
| ohos.buffer | buffer | function byteLength(string: string |Buffer |TypedArray |DataView |ArrayBuffer |SharedArrayBuffer, encoding?: BufferEncoding): number; | 新增 |
| ohos.buffer | buffer | function allocUninitialized(size: number): Buffer; | 新增 |
| ohos.buffer | buffer | function allocUninitializedFromPool(size: number): Buffer; | 新增 |
| ohos.buffer | buffer | function alloc(size: number, fill?: string |Buffer |number, encoding?: BufferEncoding): Buffer; | 新增 |
| ohos.util | TextDecoder | decodeWithStream(input: Uint8Array, options?: { stream?: boolean }): string; | 新增 |
| ohos.util | util | function parseUUID(uuid: string): Uint8Array; | 新增 |
| ohos.util | util | function randomBinaryUUID(entropyCache?: boolean): Uint8Array; | 新增 |
| ohos.util | util | function randomUUID(entropyCache?: boolean): string; | 新增 |
| ohos.worker | DedicatedWorkerGlobalScope | postMessage(messageObject: Object, transfer: Transferable[]): void; postMessage(messageObject: Object, options?: PostMessageOptions): void; postMessage(messageObject: Object, transfer: ArrayBuffer[]): void; | 废弃 |