//小端模式function BytesToIntLittleEndian(bytes){var val = 0;for (var i = bytes.length - 1; i >= 0; i--) { val += bytes[i]; if (i != 0) {val = val << 8;} }return val;}//小端模式//number 要转换的整形数值//length 要转成什么byte数组，规定数组的长度//如uint16，则lenght=2表示两个字节，转成的byte数组长度是length=2//如uint32，则lenght=2表示两个字节，转成的byte数组长度是length=4function IntToBytesLittleEndian(number, length){var bytes = [];var i = 0;do {bytes[i++] = number & (255);number = number>>8;} while ( i < length )return bytes;}//大端模式function BytesToIntBigEndian(bytes){var val = 0;for (var i = 0; i < bytes.length; ++i) { val += bytes[i]; if (i < bytes.length-1) {val = val << 8;}}return val;}//大端模式//number 要转换的整形数值//length 要转成什么byte数组，规定数组的长度//如uint16，则lenght=2表示两个字节，转成的byte数组长度是length=2//如uint32，则lenght=2表示两个字节，转成的byte数组长度是length=4function IntToBytesBigEndian(number, length){var bytes = [];var i = length;do {bytes[--i] = number & (255);number = number>>8;} while (i)return bytes;}//测试小端模式i = 65537bs = IntToBytesLittleEndian(i, 4)console.log(bs)console.log(BytesToIntLittleEndian(bs))//测试大端模式bs = IntToBytesBigEndian(i, 2)console.log(bs)console.log(BytesToIntBigEndian(bs))
