JavaScript Number.toLocaleString() with 4 digits after separator

Question

Is there a way to get number.toLocaleString() with 4 digits after the comma?

Example:

var number = 49.9712;
document.getElementById(\'id         


        

Answer 1

I found that

var number = 49.9712;
number.toLocaleString( { minimumFractionDigits: 4 })

gave the result of "49.971"

In order to actually get the 4 decimal place digits, I did this:

number.toLocaleString(undefined, { minimumFractionDigits: 4 })

Also filling in a country code worked:

number.toLocaleString('en-US', { minimumFractionDigits: 4 })

In both cases I got 49.9712 for the answer.