29 lines
838 B
Markdown
29 lines
838 B
Markdown
---
|
|
title: parseCookie
|
|
tags: browser,string,intermediate
|
|
firstSeen: 2018-01-13T14:19:21+02:00
|
|
lastUpdated: 2020-10-22T20:24:04+03:00
|
|
---
|
|
|
|
Parses an HTTP Cookie header string, returning an object of all cookie name-value pairs.
|
|
|
|
- Use `String.prototype.split(';')` to separate key-value pairs from each other.
|
|
- Use `Array.prototype.map()` and `String.prototype.split('=')` to separate keys from values in each pair.
|
|
- Use `Array.prototype.reduce()` and `decodeURIComponent()` to create an object with all key-value pairs.
|
|
|
|
```js
|
|
const parseCookie = str =>
|
|
str
|
|
.split(';')
|
|
.map(v => v.split('='))
|
|
.reduce((acc, v) => {
|
|
acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim());
|
|
return acc;
|
|
}, {});
|
|
```
|
|
|
|
```js
|
|
parseCookie('foo=bar; equation=E%3Dmc%5E2');
|
|
// { foo: 'bar', equation: 'E=mc^2' }
|
|
```
|