javascript homework on converting decimal to hex

Question

What is the hexadecimal equivalent of number 264₁₀ and 140₁₀? Please give me full coding of this program.

Answer 1

You can use the toString function on numbers, and pass the base to be converted:

(264).toString(16); // 108 hex
(140).toString(16); // 8c  hex

And to do the opposite, you can use the parseInt function:

parseInt('108', 16);  // 264 dec
parseInt('8c', 16);   // 140 dec

Answer 2

Since this is a Homework question, I am guessing that the questioner may be looking for an algorithm.

This is some C# code that does this without special functions:

int x = 140;
string s = string.Empty;
while (x != 0)
{
    int hexadecimal = x % 16;
    if (hexadecimal < 10)
         s = hexadecimal.ToString() + s;
    else
         s = ((char)('A' + (char)(hexadecimal - 10))).ToString() + s;
    x = (int)(x / (int)16);
}
MessageBox.Show("0X" + s);

Since this is homework, you can figure out how to translate this into JavaScript

Answer 3

264: 0x108

140: 0x8C

No program required.

Answer 4

If you didn't know, you can use Google to convert decimal to hexadecimal or vice versa.

But it looks like @CMS already posted the Javascript code for you :) +1 to him.