remove-empty-elements-from-an-array-in-javascript

removing-empty-array-items.js

// https://stackoverflow.com/a/48163228/1226748


// For removing holes, you should use
arr.filter(() => true)

// For removing hole, and, falsy (null, undefined, 0, -0, NaN, "", false, document.all) values:
arr.filter(x => x)

// For removing hole, null, and, undefined:
arr.filter(x => x != null)

arr = [, null, (void 0), 0, -0, NaN, false, '', 42];
console.log(arr.filter(() => true)); // [null, (void 0), 0, -0, NaN, false, '', 42]
console.log(arr.filter(x => x)); // [42]
console.log(arr.filter(x => x != null)); // [0, -0, NaN, false, "", 42]