17 lines
431 B
Markdown
17 lines
431 B
Markdown
---
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title: btoa
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tags: node,string,beginner
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---
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Creates a base-64 encoded ASCII string from a String object in which each character in the string is treated as a byte of binary data.
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- Create a `Buffer` for the given string with binary encoding and use `Buffer.toString('base64')` to return the encoded string.
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```js
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const btoa = str => Buffer.from(str, 'binary').toString('base64');
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```
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```js
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btoa('foobar'); // 'Zm9vYmFy'
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```
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