23 lines
518 B
Markdown
23 lines
518 B
Markdown
---
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title: Byte size of string
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tags: string
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expertise: beginner
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cover: blog_images/mountain-lake-cottage-2.jpg
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firstSeen: 2017-12-29T14:30:34+02:00
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lastUpdated: 2020-10-18T23:04:45+03:00
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---
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Returns the length of a string in bytes.
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- Convert a given string to a [`Blob` Object](https://developer.mozilla.org/en-US/docs/Web/API/Blob).
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- Use `Blob.size` to get the length of the string in bytes.
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```js
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const byteSize = str => new Blob([str]).size;
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```
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```js
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byteSize('😀'); // 4
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byteSize('Hello World'); // 11
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```
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