// 字符串转byte function stringToBytes(str) { var array = new Int8Array(str.length) for (var i = 0; i < str.length; i++) { array[i] = str.charCodeAt(i) } return array.buffer } // ArrayBuffer转Str function ArrayBufferToStr(value) { var buffer = value var dataview = new DataView(buffer) var ints = new Uint8Array(buffer.byteLength) var str = '' for (var i = 0; i < ints.length; i++) { str += String.fromCharCode(dataview.getUint8(i)) } return str } 最近在做蓝牙，这个也是网上找的，亲测可用，希望对你有帮助