01 · What is it?
A cookie is a small piece of data that a website stores in the browser.
Cookies can be sent back to the server with later requests.
Simple Definition: A cookie helps a website remember information between requests.
MODULE 06 · AUTHENTICATION & SECURITY
Cookie
A small piece of data stored by the browser and associated with a website.
02 · Think of it like...
Think of a cookie as a small note the website gives to the browser.
The browser keeps the note and may send it back when the user returns.
03 · What does it do?
Cookies can help websites remember:
04 · Where is it used?
Cookies are commonly used in web applications for:
05 · Example
Example: A user logs in.
The server creates a session.
The browser receives a cookie.
Later requests include that cookie.
The cookie helps the server connect later requests with the same browser session.
06 · How it connects
Cookies are stored in the browser but can also be sent with HTTP requests.
They are often part of login and session flows.
07 · Do Not Confuse
Cookie
Small browser data that can be sent automatically with HTTP requests.
Local Storage
Browser data that JavaScript reads and writes directly.
Cookie = Browser + Request
Local Storage = Browser only
08 · Topic Glossary
| ENGLISH TERM | 中文 | SIMPLE ENGLISH | 中文小白理解 |
|---|---|---|---|
| Cookie | Cookie / 浏览器 Cookie | A small piece of data stored by the browser for a website. | 网站保存在浏览器中的一小段数据。 |
| Browser | 浏览器 | Software that stores and sends cookies. | 保存 Cookie 并在需要时发送给服务器的软件。 |
| Server | 服务器 | A system that may create or read cookies during web requests. | 在 Web 请求中可能创建或读取 Cookie 的一端。 |
| Session | 会话 | A way to keep track of a user's interaction over time. | 用来保存用户一段时间内登录或操作状态的机制。 |
| Session Cookie | 会话 Cookie | A cookie used to help identify a browser session. | 用来帮助服务器识别某个浏览器会话的 Cookie。 |
| Request | 请求 | A message that may include cookies when sent to a server. | 发送给服务器时可能携带 Cookie 的请求。 |
| Response | 响应 | A server response that can send a cookie to the browser. | 服务器返回给浏览器时可以携带 Cookie 的响应。 |
| Authentication | 身份认证 | The process of checking who a user is. | 判断用户身份是谁的过程。 |
| Preference | 用户偏好 | A setting such as language or display choice. | 用户对语言、显示方式等功能的设置。 |
| Local Storage | 本地存储 | Browser storage that is different from cookies. | 浏览器中的另一种本地数据保存机制。 |
09 · What to Remember
Cookies store small pieces of data in the browser.
Cookies can be sent with later web requests.
Cookies are commonly used for sessions and login-related behavior.