yourNumber = parseInt(hexString, 16);
// Convert a number to a hexadecimal string with:
hexString = yourNumber.toString(16);
//And reverse the process with:
yourNumber = parseInt(hexString, 16);
const hexToDecimal = hex => parseInt(hex, 16);
const dec1 = hexToDecimal("2");
const dec2 = hexToDecimal("35");
const dec3 = hexToDecimal("1f4");
const dec4 = hexToDecimal("7b2");
const dec5 = hexToDecimal("123abc");
console.log(dec1); // 2
console.log(dec2); // 53
console.log(dec3); // 500
console.log(dec4); // 1970
console.log(dec5); // 1194684
const hexToDecimal = hex => parseInt(hex, 16);
const dec1 = hexToDecimal("2");
const dec2 = hexToDecimal("35");
const dec3 = hexToDecimal("1f4");
const dec4 = hexToDecimal("7b2");
const dec5 = hexToDecimal("123abc");
console.log(dec1); // 2
console.log(dec2); // 53
console.log(dec3); // 500
console.log(dec4); // 1970
console.log(dec5); // 1194684