Number to Bin Converter Using Javascript

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In this tutorial, I am going to teach you how to make a number to binary converter. You can also convert it to hexadecimal and octal representation.

To use this simple code just download the source code below.

Instructions

First, we will be writing our html code.

  1. <b>Insert Decimal Number: </b><input type = "text" name = "deci" id = "deci" size = "15" maxlength = "15" />
  2. <input type="button" value="Convert!" onclick="dec2bin()" />
  3. <br><br>
  4. <div id = "result"></div>

This will be our javascript code.

  1. <script type = "text/javascript">
  2.  
  3. function dec2bin() {
  4. var x = document.getElementById("deci").value;
  5. if ((/[^0-9]/g.test(x)) || x == "") {
  6. alert ("You must enter an integer decimal number!");
  7. document.getElementById("deci").value = "";
  8. document.getElementById("deci").focus();
  9. return false;
  10. }
  11. x = parseInt(x);
  12. var bin = x.toString(2);
  13. var hex = x.toString(16).toUpperCase();
  14. var octal = x.toString(8);
  15.  
  16.  
  17. var figs = "The binary representation of " + x + " is " + bin + "<br>";
  18. figs = figs + "The hexadecimal representation of " + x + " is " + hex + "<br>";
  19. figs = figs + "The octal representation of " + x + " is " + octal + "<br>";
  20.  
  21. document.getElementById("result").innerHTML = figs;
  22. }
  23. </script>

Finally, you have created a simple converter of number to binary. For more suggestions, queries and questions, feel free to comment below.


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