# Double tilde operator in JavaScript

There are 2 main ways to convert a string to a number.

## Using Number()

The `Number()`

way in JavaScript gets the job done fairly quickly. And if the string cannot be a valid number, it will return `NaN`

.

_10Number("123.456"); // 123.456

## Using parseInt()

Another method is using `parseInt()`

. This returns the nearest rounded down integer.

_10parseInt("123.456"); // 123

The following method is the one that I recently came across. It was a rather interesting way to convert a string to a number.

## Using Double tilde (~~)

_10~~"123.456"; // 123

This particular method ignores the decimal place and no rounding happens; just slightly different from the `parseInt()`

method.