Conversion from Decimal to octal, binary and hexadecimal in javascript

Question

I have a form where a user enters a decimal number and then from the dropdown menu he chooses if he wants to convert it either to binary, octal or hexadecimal by clicking on a c

Answer 1

If you want to convert a number to hexadecimal representation, you can use toString method. First argument of toString can be a radix for numbers. Example:

var n = 12;
n.toString(); // "c"

If you want to convert back, you can use parseInt...

var hexnum = "c";
parseInt(hexnum,16); // 12

These functions works for any radix.

Here is the full source code:

   
      
      
   
   
      

         

            Enter decimal number to convert, select Base and click   CONVERT.
         
         
         
            Binary
            Octal
            Hexadecimal
         
         Convert