37 lines
871 B
Markdown
37 lines
871 B
Markdown
|
## left-pad
|
||
|
|
|
||
|
|
String left pad
|
||
|
|
|
||
|
|
[![Build Status][travis-image]][travis-url]
|
||
|
|
|
||
|
|
## Install
|
||
|
|
|
||
|
|
```bash
|
||
|
|
$ npm install left-pad
|
||
|
|
```
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
```js
|
||
|
|
const leftPad = require('left-pad')
|
||
|
|
|
||
|
|
leftPad('foo', 5)
|
||
|
|
// => " foo"
|
||
|
|
|
||
|
|
leftPad('foobar', 6)
|
||
|
|
// => "foobar"
|
||
|
|
|
||
|
|
leftPad(1, 2, '0')
|
||
|
|
// => "01"
|
||
|
|
|
||
|
|
leftPad(17, 5, 0)
|
||
|
|
// => "00017"
|
||
|
|
```
|
||
|
|
|
||
|
|
**NOTE:** The third argument should be a single `char`. However the module doesn't throw an error if you supply more than one `char`s. See [#28](https://github.com/stevemao/left-pad/pull/28).
|
||
|
|
|
||
|
|
**NOTE:** Characters having code points outside of [BMP plan](https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane) are considered a two distinct characters. See [#58](https://github.com/stevemao/left-pad/issues/58).
|
||
|
|
|
||
|
|
[travis-image]: https://travis-ci.org/stevemao/left-pad.svg?branch=master
|
||
|
|
[travis-url]: https://travis-ci.org/stevemao/left-pad
|