What's the best way to print out a long number with dots in javascript?

Question

I would like to print out millions(or more) like 321.100.401 . Do you have any good method?

Answer 1

If you don't need it to use periods as the separator, toLocaleString will convert a number to a string using the current locale.

var num = 5000;
console.log(num.toLocaleString());

Answer 2

Just take Number.prototype.toLocaleString with an appropriate parameter like 'de-DE'.

document.write((321100401).toLocaleString('de-DE'));