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@ -1,305 +0,0 @@
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<p align="center">
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<img src="https://cloud.githubusercontent.com/assets/835857/14581711/ba623018-0436-11e6-8fce-d2ccd4d379c9.gif">
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</p>
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# JavaScript Cookie [](https://github.com/js-cookie/js-cookie/actions/workflows/ci.yml) [](https://github.com/js-cookie/js-cookie/actions/workflows/browserstack.yml) [](https://standardjs.com) [](https://codeclimate.com/github/js-cookie/js-cookie) [](https://www.npmjs.com/package/js-cookie) [](https://www.npmjs.com/package/js-cookie) [](https://www.jsdelivr.com/package/npm/js-cookie)
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A simple, lightweight JavaScript API for handling cookies
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- Works in [all](https://www.browserstack.com/automate/public-build/b3VDaHAxVDg0NDdCRmtUOWg0SlQzK2NsRVhWTjlDQS9qdGJoak1GMzJiVT0tLVhwZHNvdGRoY284YVRrRnI3eU1JTnc9PQ==--5e88ffb3ca116001d7ef2cfb97a4128ac31174c2) browsers
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- Accepts [any](#encoding) character
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- [Heavily](test) tested
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- No dependency
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- Supports ES modules
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- Supports AMD/CommonJS
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- [RFC 6265](https://tools.ietf.org/html/rfc6265) compliant
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- Useful [Wiki](https://github.com/js-cookie/js-cookie/wiki)
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- Enable [custom encoding/decoding](#converters)
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- **< 800 bytes** gzipped!
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**👉👉 If you're viewing this at https://github.com/js-cookie/js-cookie, you're reading the documentation for the main branch.
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[View documentation for the latest release.](https://github.com/js-cookie/js-cookie/tree/latest#readme) 👈👈**
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## Installation
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### NPM
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JavaScript Cookie supports [npm](https://www.npmjs.com/package/js-cookie) under the name `js-cookie`.
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```bash
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npm i js-cookie
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```
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The npm package has a `module` field pointing to an ES module variant of the library, mainly to provide support for ES module aware bundlers, whereas its `browser` field points to an UMD module for full backward compatibility.
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_Not all browsers support ES modules natively yet_. For this reason the npm package/release provides both the ES and UMD module variant and you may want to include the ES module along with the UMD fallback to account for this:
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### CDN
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Alternatively, include js-cookie via [jsDelivr CDN](https://www.jsdelivr.com/package/npm/js-cookie).
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## Basic Usage
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Create a cookie, valid across the entire site:
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```javascript
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Cookies.set('name', 'value')
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```
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Create a cookie that expires 7 days from now, valid across the entire site:
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```javascript
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Cookies.set('name', 'value', { expires: 7 })
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```
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Create an expiring cookie, valid to the path of the current page:
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```javascript
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Cookies.set('name', 'value', { expires: 7, path: '' })
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```
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Read cookie:
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```javascript
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Cookies.get('name') // => 'value'
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Cookies.get('nothing') // => undefined
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```
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Read all visible cookies:
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```javascript
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Cookies.get() // => { name: 'value' }
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```
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_Note: It is not possible to read a particular cookie by passing one of the cookie attributes (which may or may not
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have been used when writing the cookie in question):_
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```javascript
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Cookies.get('foo', { domain: 'sub.example.com' }) // `domain` won't have any effect...!
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```
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The cookie with the name `foo` will only be available on `.get()` if it's visible from where the
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code is called; the domain and/or path attribute will not have an effect when reading.
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Delete cookie:
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```javascript
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Cookies.remove('name')
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```
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Delete a cookie valid to the path of the current page:
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```javascript
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Cookies.set('name', 'value', { path: '' })
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Cookies.remove('name') // fail!
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Cookies.remove('name', { path: '' }) // removed!
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```
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_IMPORTANT! When deleting a cookie and you're not relying on the [default attributes](#cookie-attributes), you must pass the exact same path and domain attributes that were used to set the cookie:_
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```javascript
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Cookies.remove('name', { path: '', domain: '.yourdomain.com' })
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```
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_Note: Removing a nonexistent cookie neither raises any exception nor returns any value._
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## Namespace conflicts
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If there is any danger of a conflict with the namespace `Cookies`, the `noConflict` method will allow you to define a new namespace and preserve the original one. This is especially useful when running the script on third party sites e.g. as part of a widget or SDK.
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```javascript
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// Assign the js-cookie api to a different variable and restore the original "window.Cookies"
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var Cookies2 = Cookies.noConflict()
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Cookies2.set('name', 'value')
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```
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_Note: The `.noConflict` method is not necessary when using AMD or CommonJS, thus it is not exposed in those environments._
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## Encoding
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This project is [RFC 6265](http://tools.ietf.org/html/rfc6265#section-4.1.1) compliant. All special characters that are not allowed in the cookie-name or cookie-value are encoded with each one's UTF-8 Hex equivalent using [percent-encoding](http://en.wikipedia.org/wiki/Percent-encoding).
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The only character in cookie-name or cookie-value that is allowed and still encoded is the percent `%` character, it is escaped in order to interpret percent input as literal.
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Please note that the default encoding/decoding strategy is meant to be interoperable [only between cookies that are read/written by js-cookie](https://github.com/js-cookie/js-cookie/pull/200#discussion_r63270778). To override the default encoding/decoding strategy you need to use a [converter](#converters).
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_Note: According to [RFC 6265](https://tools.ietf.org/html/rfc6265#section-6.1), your cookies may get deleted if they are too big or there are too many cookies in the same domain, [more details here](https://github.com/js-cookie/js-cookie/wiki/Frequently-Asked-Questions#why-are-my-cookies-being-deleted)._
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## Cookie Attributes
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Cookie attribute defaults can be set globally by creating an instance of the api via `withAttributes()`, or individually for each call to `Cookies.set(...)` by passing a plain object as the last argument. Per-call attributes override the default attributes.
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### expires
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Define when the cookie will be removed. Value must be a [`Number`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number) which will be interpreted as days from time of creation or a [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) instance. If omitted, the cookie becomes a session cookie.
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To create a cookie that expires in less than a day, you can check the [FAQ on the Wiki](https://github.com/js-cookie/js-cookie/wiki/Frequently-Asked-Questions#expire-cookies-in-less-than-a-day).
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**Default:** Cookie is removed when the user closes the browser.
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**Examples:**
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```javascript
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Cookies.set('name', 'value', { expires: 365 })
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Cookies.get('name') // => 'value'
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Cookies.remove('name')
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```
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### path
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A [`String`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) indicating the path where the cookie is visible.
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**Default:** `/`
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**Examples:**
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```javascript
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Cookies.set('name', 'value', { path: '' })
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Cookies.get('name') // => 'value'
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Cookies.remove('name', { path: '' })
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```
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**Note regarding Internet Explorer:**
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> Due to an obscure bug in the underlying WinINET InternetGetCookie implementation, IE’s document.cookie will not return a cookie if it was set with a path attribute containing a filename.
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(From [Internet Explorer Cookie Internals (FAQ)](http://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx))
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This means one cannot set a path using `window.location.pathname` in case such pathname contains a filename like so: `/check.html` (or at least, such cookie cannot be read correctly).
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In fact, you should never allow untrusted input to set the cookie attributes or you might be exposed to a [XSS attack](https://github.com/js-cookie/js-cookie/issues/396).
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### domain
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A [`String`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) indicating a valid domain where the cookie should be visible. The cookie will also be visible to all subdomains.
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**Default:** Cookie is visible only to the domain or subdomain of the page where the cookie was created, except for Internet Explorer (see below).
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**Examples:**
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Assuming a cookie that is being created on `site.com`:
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```javascript
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Cookies.set('name', 'value', { domain: 'subdomain.site.com' })
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Cookies.get('name') // => undefined (need to read at 'subdomain.site.com')
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```
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**Note regarding Internet Explorer default behavior:**
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> Q3: If I don’t specify a DOMAIN attribute (for) a cookie, IE sends it to all nested subdomains anyway?
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> A: Yes, a cookie set on example.com will be sent to sub2.sub1.example.com.
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> Internet Explorer differs from other browsers in this regard.
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(From [Internet Explorer Cookie Internals (FAQ)](http://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx))
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This means that if you omit the `domain` attribute, it will be visible for a subdomain in IE.
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### secure
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Either `true` or `false`, indicating if the cookie transmission requires a secure protocol (https).
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**Default:** No secure protocol requirement.
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**Examples:**
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```javascript
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Cookies.set('name', 'value', { secure: true })
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Cookies.get('name') // => 'value'
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Cookies.remove('name')
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```
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### sameSite
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A [`String`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String), allowing to control whether the browser is sending a cookie along with cross-site requests.
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Default: not set.
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**Note that more recent browsers are making "Lax" the default value even without specifiying anything here.**
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**Examples:**
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```javascript
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Cookies.set('name', 'value', { sameSite: 'strict' })
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Cookies.get('name') // => 'value'
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Cookies.remove('name')
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```
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### Setting up defaults
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```javascript
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const api = Cookies.withAttributes({ path: '/', domain: '.example.com' })
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```
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## Converters
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### Read
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Create a new instance of the api that overrides the default decoding implementation. All get methods that rely in a proper decoding to work, such as `Cookies.get()` and `Cookies.get('name')`, will run the given converter for each cookie. The returned value will be used as the cookie value.
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Example from reading one of the cookies that can only be decoded using the `escape` function:
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```javascript
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document.cookie = 'escaped=%u5317'
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document.cookie = 'default=%E5%8C%97'
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var cookies = Cookies.withConverter({
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read: function (value, name) {
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|
|
if (name === 'escaped') {
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return unescape(value)
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|
}
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|
|
// Fall back to default for all other cookies
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|
|
return Cookies.converter.read(value, name)
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|
}
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|
})
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|
|
cookies.get('escaped') // 北
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|
cookies.get('default') // 北
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|
|
cookies.get() // { escaped: '北', default: '北' }
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|
```
|
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|
### Write
|
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|
|
Create a new instance of the api that overrides the default encoding implementation:
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
```javascript
|
|
|
|
|
|
|
|
Cookies.withConverter({
|
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|
|
|
|
|
write: function (value, name) {
|
|
|
|
|
|
|
|
return value.toUpperCase()
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
})
|
|
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## TypeScript declarations
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
|
|
npm i @types/js-cookie
|
|
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Server-side integration
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check out the [Servers Docs](SERVER_SIDE.md)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Contributing
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Check out the [Contributing Guidelines](CONTRIBUTING.md)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Security
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
For vulnerability reports, send an e-mail to `js-cookie at googlegroups dot com`
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Releasing
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Releasing should be done via the `Release` GitHub Actions workflow, so that published packages on npmjs.com have package provenance.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
GitHub releases are created as a draft and need to be published manually!
|
|
|
|
|
|
|
|
(This is so we are able to craft suitable release notes before publishing.)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Supporters
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
|
|
|
<a href="https://www.browserstack.com/"><img src="https://raw.githubusercontent.com/wiki/js-cookie/js-cookie/Browserstack-logo%402x.png" width="150"></a>
|
|
|
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Many thanks to [BrowserStack](https://www.browserstack.com/) for providing unlimited browser testing free of cost.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- [Klaus Hartl](https://github.com/carhartl)
|
|
|
|
|
|
|
|
- [Fagner Brack](https://github.com/FagnerMartinsBrack)
|
|
|
|
|
|
|
|
- And awesome [contributors](https://github.com/js-cookie/js-cookie/graphs/contributors)
|
|
|
|
|
yikai
2 years ago