javascript - 如何在 node.js 中实现 readUInt16BE 函数

Question

<分区>

Answer 1

您可以使用编码/二进制包。 例如:(http://play.golang.org/p/5s_-hclYJ0)

package main

import (
    "encoding/binary"
    "fmt"
)

func main() {
    buf := make([]byte, 1024)

    // Put uint16 320 (big endian) into buf at offster 127
    binary.BigEndian.PutUint16(buf[127:], 320)

    // Put uint16 420 (little endian) into buf at offster 127
    binary.LittleEndian.PutUint16(buf[255:], 420)

    // Retrieve the uint16 big endian from buf
    result := binary.BigEndian.Uint16(buf[127:])
    fmt.Printf("%d\n", result)

    // Retrieve the uint16 little endian from buf
    result = binary.LittleEndian.Uint16(buf[255:])
    fmt.Printf("%d\n", result)

    // See the state of buf (display only 2 bytes from the given often as it is uint16)
    fmt.Printf("%v, %v\n", buf[127:129], buf[255:257])
}