Question

How to add item to an array at a specific index in JavaScript

Answer 1

const arr = ['php', 'c++'];

arr.splice(1, 0, 'javascript');

document.write(arr);

 
 
/*
run:
       
php,javascript,c++ 
     
*/

 

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Answer 2

const arr = ['php', 'c++', 'c#'];

arr.splice(1, 0, 'javascript', 'python');

document.write(arr);

 
 
/*
run:
       
php,javascript,python,c++,c# 
     
*/

 

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Answer 3

const arr = ['php', 'c++', 'c#'];

arr.splice(0, 0, 'javascript');

document.write(arr);

 
 
/*
run:
       
javascript,php,c++,c# 
     
*/

 

70+ SQL courses for beginners and professionals