How to extend an existing JavaScript array with another array?

Javascript Web Development Front End Technology

To extend an existing array in JavaScript, use the Array.concat() method.

Example

You can try to run the following code to extend an existing JavaScript array with another array:

<html>    
   <head>      
      <title>JavaScript Array push Method</title>    
   </head>        
   <body>          
      <script>          
         var numbers = new Array(1, 4, 9);          
         var numbers2 = new Array(2, 5);                    
         numbers = numbers.concat(numbers2);                    
         document.write("new numbers is : " + numbers );                  
      </script>          
   </body>
</html>

Output

new numbers is : 1,4,9,2,5

V Jyothi

Published on 22-Apr-2018 22:22:34

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