如何在 JavaScript 中从十六进制转换为 ASCII？
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How to convert from Hex to ASCII in JavaScript?
提问by Q8Y
How to convert from Hexstring to ASCIIstring in JavaScript?
如何在 JavaScript 中将Hex字符串转换为字符串ASCII？
Ex:
前任：
32343630 it will be 2460
32343630 将是 2460
回答by Delan Azabani
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'
回答by michieljoris
For completeness sake the reverse function:
为了完整起见，反向函数：
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
回答by 0x8BADF00D
Another way to do it (if you use Node.js):
另一种方法（如果您使用 Node.js）：
var input = '32343630';
var output = new Buffer(input, 'hex');
log(input + " -> " + output); // Result: 32343630 -> 2460
回答by Sampath Liyanage
You can use this..
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);回答by Ayushya
回答by myfavoritenoisemaker
I've found that the above solution will not work if you have to deal with control characters like 02(STX) or 03(ETX), anything under 10will be read as a single digit and throw off everything after. I ran into this problem trying to parse through serial communications. So, I first took the hex string received and put it in a buffer object then converted the hex string into an array of the strings like so:
我发现如果您必须处理02(STX) 或03(ETX) 之类的控制字符，则上述解决方案将不起作用，下面的任何内容都10将被读取为一位数，然后丢弃所有内容。我在尝试通过串行通信解析时遇到了这个问题。因此，我首先将收到的十六进制字符串放入缓冲区对象中，然后将十六进制字符串转换为字符串数组，如下所示：
buf = Buffer.from(data, 'hex');
l = Buffer.byteLength(buf,'hex');
for (i=0; i<l; i++){
char = buf.toString('hex', i, i+1);
msgArray.push(char);
}
Then .join it
然后.加入它
message = msgArray.join('');
then I created a hexToAsciifunction just like in @Delan Azabani'sanswer above...
然后我创建了一个hexToAscii函数，就像上面@Delan Azabani 的回答一样......
function hexToAscii(str){
hexString = str;
strOut = '';
for (x = 0; x < hexString.length; x += 2) {
strOut += String.fromCharCode(parseInt(hexString.substr(x, 2), 16));
}
return strOut;
}
then called the hexToAsciifunction on 'message'
然后hexToAscii在“消息”上调用函数
message = hexToAscii(message);
This approach also allowed me to iterate through the array and slice into the different parts of the transmission using the control characters so I could then deal with only the part of the data I wanted. Hope this helps someone else!
这种方法还允许我遍历数组并使用控制字符将传输的不同部分切片，这样我就可以只处理我想要的数据部分。希望这对其他人有帮助！
回答by SimonC
An optimized version of the implementation of the reverse function proposed by @michieljoris (according to the comments of @Beterraba and @Mala):
@michieljoris 提出的反向函数实现的优化版本（根据@Beterraba 和@Mala 的评论）：
function a2hex(str) {
var hex = '';
for (var i = 0, l = str.length; i < l; i++) {
var hexx = Number(str.charCodeAt(i)).toString(16);
hex += (hexx.length > 1 && hexx || '0' + hexx);
}
return hex;
}
alert(a2hex('2460')); // display 32343630回答by Zibri
console.log(
"68656c6c6f20776f726c6421".match(/.{1,2}/g).reduce((acc,char)=>acc+String.fromCharCode(parseInt(char, 16)),"")
)回答by mathad
** for Hexa to String**
** 十六进制转字符串**
let input = '32343630';
让输入 = '32343630';
Note : let output = new Buffer(input, 'hex'); // this is deprecated
注意： let output = new Buffer(input, 'hex'); // 这已被弃用
let buf = new Buffer.from(input, "hex");
让 buf = new Buffer.from(input, "hex");
let data = buf.toString("utf8");
让数据 = buf.toString("utf8");
