25 lines
682 B
Markdown
25 lines
682 B
Markdown
---
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title: Pad string
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type: snippet
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language: javascript
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tags: [string]
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cover: bridge-over-road
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dateModified: 2020-10-22T20:24:04+03:00
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---
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Pads a string on both sides with the specified character, if it's shorter than the specified `length`.
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- Use `String.prototype.padStart()` and `String.prototype.padEnd()` to pad both sides of the given string.
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- Omit the third argument, `char`, to use the whitespace character as the default padding character.
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```js
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const pad = (str, length, char = ' ') =>
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str.padStart((str.length + length) / 2, char).padEnd(length, char);
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```
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```js
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pad('cat', 8); // ' cat '
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pad(String(42), 6, '0'); // '004200'
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pad('foobar', 3); // 'foobar'
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```
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