How to use nested while loop in JavaScript?

Javascript Web Development Front End Technology

The purpose of a while loop is to execute a statement or code block repeatedly as long as an expression is true. Once the expression becomes false, the loop terminates.

Example

You can try to run the following code to learn how to use nested while loop

Live Demo

<html>
   <body>
      <script>
         var height = 2;
         var width = 8;

         var col = 0;
         var row = 0;
         document.write("Starting Loop<br> ");

         while (row < height) {
            col = 0;

            while(col < width) {
               document.write("#");
               col++;
            }
            document.write("<br>");
            row++;
         }
         document.write("Loop stopped!");
      </script>
   </body>
</html>

Swarali Sree

Published on 08-Feb-2018 11:13:37

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