# How to trim the leading zero in a number in JavaScript

> Learn how to trim the leading zero from a number in JavaScript, using parseInt() with radix 10, the unary plus operator, or a regular expression like /^0+/.

Author: Flavio Copes | Published: 2018-07-05 | Canonical: https://flaviocopes.com/how-to-trim-leading-zero-number/

If you have a number with a leading zero, like `010` or `02`, how to remove that zero?

There are various ways.

The most explicit is to use `parseInt()`:

```js
parseInt(number, 10)
```

10 is the radix, and should be always specified to avoid inconsistencies across different browsers, although some engines work fine without it.

Another way is to use the `+` unary operator:

```js
+number
```

Those are the simplest solutions.

You can also go the [regular expression](https://flaviocopes.com/javascript-regular-expressions/) route, like this:

```js
number.replace(/^0+/, '')
```