3 ms·

It is a trick to coerce it to an integer. >> new Date() Date 2019-05-27T12:52:41.932Z >> +new Date() 1558961556913 >> +"4" // works on anyt

It is a trick to coerce it to an integer. >> new Date() Date 2019-05-27T12:52:41.932Z >> +new Date() 1558961556913 >> +"4" // works on anything else :) 4

ape4 7y ago
+ can concatenate strings. So I guess there is an implied: 0 + in there to make it in integer mode.
- dentemple 7y ago
  There's no implication involved. It's the unary operator, and it performs the type conversion exactly as specced.
  - ape4 7y ago
    TIL, https://scotch.io/tutorials/javascript-unary-operators-simple-and-useful#toc-unary-plus- https://scotch.io/tutorials/javascript-unary-operators-simpl...