20 lines
556 B
Markdown
20 lines
556 B
Markdown
---
|
|
title: pad
|
|
tags: string,beginner
|
|
---
|
|
|
|
Pads a string on both sides with the specified character, if it's shorter than the specified length.
|
|
|
|
Use `String.padStart()` and `String.padEnd()` to pad both sides of the given string.
|
|
Omit the third argument, `char`, to use the whitespace character as the default padding character.
|
|
|
|
```js
|
|
const pad = (str, length, char = ' ') =>
|
|
str.padStart((str.length + length) / 2, char).padEnd(length, char);
|
|
```
|
|
|
|
```js
|
|
pad('cat', 8); // ' cat '
|
|
pad(String(42), 6, '0'); // '004200'
|
|
pad('foobar', 3); // 'foobar'
|
|
``` |