var colors=["red","blue",,null,undefined,,"green"]; //remove null and undefined elements from colors var realColors = colors.filter(function (e) {return e != null;}); console.log(realColors);
var array = [0, 1, null, 2, "", 3, undefined, 3,,,,,, 4,, 4,, 5,, 6,,,,]; var filtered = array.filter(function (el) { return el != null; }); console.log(filtered);