Q. Where do use reverse() method ?

जिस array के element को reverse (मतलब left side से right side की तरफ ) करना हो , तब reverse method का use करते हैं

• Example

  
  
  
  <script>

     // String value print
  var a = ["Cat", "Apple", "Ball", "Dog"];
  document.write( "<b>Before Reverse Method:  </b>"+a+"<br>")
  a.sort();
  a.reverse()
  document.write( "<b>After Reverse Method:  </b>"+a);
     

  </script>

  Out Put : Before Sort Method : Cat,Apple,Ball,Dog
  After Sort Method : Dog,Cat,Ball,Apple
  

  <script>

  // Number value print
  var a = [10, 100, 2, 20, 3, 30];
  document.write("<strong>Normal Value : </strong>"+a+"<br>")
  function comp(a,b){
  return a-b;
  }
  a.sort(comp);
  a.reverse()
  document.write("<strong>reverse Value : </strong>"+a)
  

  </script>

  Out Put : Normal Value : 10,100,2,20,3,30
  reverse Value : 100,30,20,10,3,2