Question

How to add a new element at the end (append) of an array in Node.js

Answer 1

let arr = ["C", "C++", "JavaScript", "Java"];
 
arr.push("NodeJS"); 

console.log(arr);
 



/*
run:
 
[ 'C', 'C++', 'JavaScript', 'Java', 'NodeJS' ]
 
*/
 

 

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Answer 2

let arr = ["C", "C++", "JavaScript", "Java"];
 
arr[arr.length] = "NodeJS"; 

console.log(arr);
 



/*
run:
 
[ 'C', 'C++', 'JavaScript', 'Java', 'NodeJS' ]
 
*/

 

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Answer 3

let arr = ["C", "C++", "JavaScript", "Java"];
 
arr[7] = "NodeJS"; 

console.log(arr);
 



/*
run:
 
[ 'C', 'C++', 'JavaScript', 'Java', <3 empty items>, 'NodeJS' ]
 
*/

 

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