JSFiddle - React, Tailwind, and code Playground

by mendesjuan

JavaScript

var undef;
var arr = [1,2, undef, 3, 4, undef];
for (var i=arr.length - 1; i >=0; i--) {
    if ( !arr[i] ) {
        arr.splice(i,1);
    }
}
console.log(arr);