Question

How to check if specific index exists in array with Node.js

Answer 1

const array = ["node.js", "php", "ruby", "c++"];

const index = 6;

if (array[index] !== undefined) {
  	console.log("index: " + index + " exists"); 
} else {
		console.log("index: " + index + " not exists"); 
}
  
   
   
   
/*
run:
         
index: 6 not exists
       
*/

 

70+ SQL courses for beginners and professionals