將輸入轉換為十六進制和二進制

Question

我觀看了一些關於此的視頻，似乎無法轉換為十六進制或二進制。

我想接受輸入，並記錄輸入的十六進制和二進制

 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

我會使用toString(base)而不是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));