一、十六进制转字符串

export const hexToStr = function(hex, encoding) {var trimedStr = hex.trim();var rawStr = trimedStr.substr(0, 2).toLowerCase() === "0x" ? trimedStr.substr(2) : trimedStr;var len = rawStr.length;var curCharCode;var resultStr = [];for (var i = 0; i < len; i = i + 2) {curCharCode = parseInt(rawStr.substr(i, 2), 16);resultStr.push(curCharCode);}var val = "";var arr = resultStr;for (let i = 0; i < arr.length; i++) {val += String.fromCharCode(arr[i]);}return val;
}

二、十进制转16进制

export const tenToHex = (num, digit = 4) => {const hex = num.toString(16);return hex.padStart(digit, 0);
}

三、字符串转16进制

export const stringToHex = (str) =>{var val = "";for (var i = 0; i < str.length; i++) {if (val == "") {val = str.charCodeAt(i).toString(16); //获取字符的Unicode码然后转16进制} else {val += str.charCodeAt(i).toString(16); //获取字符的Unicode码然后转16进制再拼接,中间用逗号隔开}}return val;
}

四、arrayBuffer转16进制字符串

export const arrayBufferToHexString = (buffer) => {const hexArr = Array.prototype.map.call(new Uint8Array(buffer),function(bit) {return ('00' + bit.toString(16)).slice(-2)})return hexArr.join('').toUpperCase();
}

五、十六进制字符串转ArrayBuffer

export let hexStringToArrayBuffer = (str) => {//十六进制转ArrayBufferreturn new Uint8Array(str.match(/[\da-f]{2}/gi).map(function(h) {return parseInt(h, 16)})).buffer
}

六、十六进制转GB2312

npm install iconv-lite

export let hexToGb2312 = (hexString)=> {const buffer = Buffer.from(hexString, 'hex');const decodedString = iconv.decode(buffer, 'GB2312');return decodedString;
}