Remove empty elements from an array in Javascript

Question

How do I remove empty elements from an array in JavaScript?

Is there a straightforward way, or do I need to loop through it and remove them manually?

Answer 1

You can use filter with index and in operator

let a = [1,,2,,,3];

console.log(a);

let b = a.filter((x,i)=> i in a);

console.log(b);