How to get rid of last comma in javascript?

Question

When it Prints all the days along with the comma so at the end there is one more and extra comma after Sunday comes.could you help me out?

<script>
    var days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
                'Friday', 'Saturday', 'Sunday'];
    for (var i=0; i<days.length; i++) {
    document.write(days[i] + ', ');
    }
</script>

Answer 1

Use days.join(', '); instead of an iteration through your array.

EDIT :

Further more, you can do it in one line :
document.write(['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'].join(', '));

Answer 2

simple logic is to print it like this

var days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
            'Friday', 'Saturday', 'Sunday'];
document.write(days[0]);
for (var i=1; i < (days.length); i++) {
    document.write(',' + days[i]);
}

or

var days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
            'Friday', 'Saturday', 'Sunday'];
for (var i=0; i < (days.length-1); i++) {
    document.write(days[i] + ',');
}
document.write(days[days.length-1]);

Answer 3

Use join :

document.write(days.join(', '));