While Loop in JavaScript

While Loop executes a set of statements as long as the conditions is true.
while (variable<maxValue)
  {
 // statements
  }

Example 1 : Basic While Loop
<script type='text/javascript'>
    var light = "red";             
    var counter = 1;               
    while (counter <= 5)
    {
      document.write("Car ",counter," approaches intersection.<BR>");
      counter++;   //Next car
    }
    </script>


Note : If counter is not incremented, Car1 will always approach the intersection.