JavaScript Loops:

1. for

   <script type="text/javascript">    
       // for loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       for (var i = 0; i < cities.length; i++) {
           console.log(cities[i]);
       }
   </script>

   Output:
   
    
2. while

   <script type="text/javascript">    
       // while loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       let i = 0;
   
       while(i < cities.length){
           console.log(cities[i]);
           i++;
       }
   </script>

   Output:
   
    
3. foreach

   <script type="text/javascript">    
       // foreach loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       cities.forEach(value => {
           console.log(value);
       });    
   </script>

   Output:
   
    
4. map

   <script type="text/javascript">    
       // map loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       const cityNames = cities.map(value => {
           const cityName = value.toUpperCase();
           return cityName;
       });
   
       console.log(cityNames);
   </script>

   Output:
   
    
5. do while

   <script type="text/javascript">    
       // do while loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       let i = 0;
   
       do {
           console.log(cities[i]);
           i++;
       }
       while(i < cities.length)
   </script>

   Output:
   
    
6. for in

   <script type="text/javascript">    
       // for in loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       for(const key in cities) {
           console.log(cities[key]);
       }
   </script>

   Output:
   
    
7. for of

   <script type="text/javascript">    
       // for of loop
   
       const cities = ['Delhi', 'Bangalore', 'Pune', 'Patna', 'Mysore', 'Mumbai', 'Jaipur', 'Bhopal'];
   
       for(const value of cities) {
           console.log(value);
       }
   </script>

   Output: