Question

How to add 2 elements to an array start at specific index in JavaScript

Answer 1

const arr = ['javascript', 'php', 'python', 'c', 'c#'];
  
const index = 1;
 
arr.splice(index, 0, "c++", "java");
  
console.log(arr); 
  
  
  
  
/*
run:
  
["javascript", "c++", "java", "php", "python", "c", "c#"]
  
*/

 

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