Is there a way to format strings in java script?

Question

java script built in functions

Answer 1

decimal places - toFixed(n)
formatting - toLocaleString(<locale>)

example:

var x = 10000000
alert(x.toLocaleString('en-US'))

// outputs 10,000,000

more about locales:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString

Answer 2

mind giving an example?
format how exactly?

Answer 3

formatting how many decimal places are shown or putting commas in large numbers such as 1,000,000.00