将输入转换为十六进制和二进制

Question

I watched a few videos on this, cannot seem to convert to Hex or Binary.

I want to take the input, and log the hex and the binary of the input

 var hexLetters = "0123456789ABCDEF".split(""); var decimalNum = Number(window.prompt("Enter a decimal number to convert")); var binaryNum= ""; console.log("The number " + decimalNum + " in binary is: ") console.log(Number.parseInt(binaryNum, 2)); // returns an integer of the specified radix or base. var hexNum = ""; console.log("The number " + decimalNum + " in hexadecimal is: ") console.log(Number.parseInt(hexNum, 16));

Answer 1

I would use toString(base) instead of Number.parseInt() :

var hexLetters = "0123456789ABCDEF".split("");


var decimalNum = Number(window.prompt("Enter a decimal number to convert"));


var binaryNum= "";

console.log("The number " + decimalNum + " in binary is: ");
console.log(decimalNum.toString(2)); // returns an integer of the specified radix or base.

var hexNum = "";


console.log("The number " + decimalNum + " in hexadecimal is: ");
console.log(decimalNum.toString(16));