Map array js - how to pass argument

Question

If I write map like this:

days=['m', 't'];
days.map(paste(day));

function paste(day) {
  alert(day)
}

It doesn't work;

How can i pass my argument day to function paste?

Answer 1

You need to pass your paste function to map, not invoke it:

var days = ['m', 't'];
days.map(paste);

function paste(day) {
  alert(day)
}

map function will iterate through the days array and invoke the function you passed in it on every object of the days.