JavaScript中如何将16进制的字符串数据转为ArrayBuffer

Question

How do I convert the string 'AA5504B10000B5' to an ArrayBuffer ?

Answer 1

You could use regular expressions together with Array#map and parseInt(string, radix) :

 var hex = 'AA5504B10000B5' var typedArray = new Uint8Array(hex.match(/[\\da-f]{2}/gi).map(function (h) { return parseInt(h, 16) })) console.log(typedArray) console.log([0xAA, 0x55, 0x04, 0xB1, 0x00, 0x00, 0xB5]) var buffer = typedArray.buffer 

Answer 2

Compact one-liner version:

new Uint8Array('AA5504B10000B5'.match(/../g).map(h=>parseInt(h,16))).buffer

Answer 3

The accepted answer throws an exception when the hex string is empty. Here is a safer solution:

function hex_decode(string) {
    let bytes = [];
    string.replace(/../g, function (pair) {
        bytes.push(parseInt(pair, 16));
    });
    return new Uint8Array(bytes).buffer;
}