`+` is just the unary plus operator. It serves the purpose of converting the Date object into a number (a timestamp). Try it on the console, with and without the plus.
– Margaret BloomFeb 27 '16 at 08:14
To clarify, the plus is executed against `new Date()` variable, not the `new` keyword. The duplicate answer should explain the rest
– CodingIntrigueFeb 27 '16 at 08:15