如何在JavaScript中从Hex转换为ASCII？

Question

如何在JavaScript中从Hex字符串转换为字符串ASCII？

例如:

32343630将是2460

Answer 1

function hex2a(hexx) {
    var hex = hexx.toString();//force conversion
    var str = '';
    for (var i = 0; (i < hex.length && hex.substr(i, 2) !== '00'); i += 2)
        str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
    return str;
}
hex2a('32343630'); // returns '2460'

Answer 2

为了完整起见,反向功能:

function a2hex(str) {
  var arr = [];
  for (var i = 0, l = str.length; i < l; i ++) {
    var hex = Number(str.charCodeAt(i)).toString(16);
    arr.push(hex);
  }
  return arr.join('');
}
a2hex('2460'); //returns 32343630

Answer 3

另一种方法(如果你使用Node.js):

var input  = '32343630';
var output = new Buffer(input, 'hex');
log(input + " -> " + output);  // Result: 32343630 -> 2460

Answer 4

你可以用这个..

var asciiVal = "32343630".match(/.{1,2}/g).map(function(v){
      return String.fromCharCode(parseInt(v, 16));
    }).join('');
    
document.write(asciiVal);

Answer 5

我在web3库中找到了一个有用的函数.

var hexString = "0x1231ac"
string strValue = web3.toAscii(hexString)

Answer 6

** 十六进制转字符串**

let input  = '32343630';

注意： let output = new Buffer(input, 'hex'); // 这已被弃用

let buf = Buffer.from(input, "hex");
let data = buf.toString("utf8");

Answer 7

console.log(

"68656c6c6f20776f726c6421".match(/.{1,2}/g).reduce((acc,char)=>acc+String.fromCharCode(parseInt(char, 16)),"")

)