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?

aga · Accepted Answer · 2013-11-05 10:50:00Z

4

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.

answered Nov 5, 2013 at 10:50

aga

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1 Comment

ty just found it on mdn

Royi Namir · Accepted Answer · 2013-11-05 10:50:51Z

0

days=['m', 't'];
days.map(function (a){paste(a)});

function paste(day) {
      alert(day)
}

This works but aga's is better. ( shorter).

answered Nov 5, 2013 at 10:50

Royi Namir

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