Skip to main content

Numbers

These are all JavaScript Numbers examples. No matter positive, negative or decimal. We call them numbers.

  • 1
  • 3.14
  • -27.5
  • 5000

Numberic separator(_)​

If you want, you can use the numeric separator (_) to represent larger numbers more clearly.

For example,

let number = 1_000; // equivalent to 1000

It makes it easier to read larger numbers.

For example,

let number = 1_000_000; // 1000000(1 million)

Converting number to string​

By using .toString() method, numbers can be converted to strings.

For example,

let number = 15;
number.toString(); //"15"

NaN​

NaN stands for Not a Number. When there is an error in the code, most commonly when you forget to convert a string to a number, NaN occurs.

For example, when multiply a number with a string.

"four" * 4; // NaN