How do I check if all elements of an array are null?

Question

What\'s the best way to check for an array with all null values besides using Lodash, possibly with ES6?

var emp = [null, null, null];
if (_.compact(emp).len         


        

Answer 1

Another way to solve this. Is join the array elements and replace the left out ',' with empty space.

var emp = [null, null, null];

if(emp.join(',').replace(/,/g, '').length === 0) {
 console.log('null');
}