remove undefined from array types code example
Example 1: remove undefined from array javascript
var data = [42, 21, undefined, 50, 40, undefined, 9];
data = data.filter(function( element ) {
return element !== undefined;
});
Example 2: remove null from array javascript
let array = [0, 1, null, 2, 3];
function removeNull(array) {
return array.filter(x => x !== null)
};