Get month in mm format in javascript

Question

How do I retrieve the month from the current date in mm format? (i.e. \"05\")

This is my current code:

var currentDate = new Date();
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Answer 1

In order for the accepted answer to return a string consistently, it should be:

if(currentMonth < 10) {
    currentMonth = '0' + currentMonth;
} else {
    currentMonth = '' + currentMonth;
}

Or:

currentMonth = (currentMonth < 10 ? '0' : '') + currentMonth;

Just for funsies, here's a version without a conditional:

currentMonth = ('0' + currentMonth).slice(-2);

Edit: switched to slice, per Gert G's answer, credit where credit is due; substr works too, I didn't realize it accepts a negative start argument

Answer 2

An alternative way:

var currentMonth=('0'+(currentDate.getMonth()+1)).slice(-2)

Answer 3

ES6 version, inpired by Gert Grenander

let date = new Date();
let month = date.getMonth()+1;
month = `0${month}`.slice(-2);

Answer 4

if (currentMonth < 10) { currentMonth = '0' + currentMonth; }

Answer 5

var CurrentDate = new Date();
    CurrentDate.setMonth(CurrentDate.getMonth());

    var day = CurrentDate.getDate();
    var monthIndex = CurrentDate.getMonth()+1;
    if(monthIndex<10){
        monthIndex=('0'+monthIndex);
    }
    var year = CurrentDate.getFullYear();

    alert(monthIndex);

Answer 6

One line solution:

var currentMonth = (currentDate.getMonth() < 10 ? '0' : '') + currentDate.getMonth();