What is get method and post method in html

GET Vs. POST: Key Difference Between HTTP Methods

GET method is used to appends form data to the URL in name or value pair. If you use GET, the length of URL will remain limited. It helps users to submit the bookmark the result. GET is better for the data which does not require any security or having images or word documents.

In this GET Vs. POST tutorial, you will learn:

• What is GET?
• What is POST?
• Features of GET
• Features of POST
• GET Method Example
• POST Method Example
• Difference between a GET and POST
• Advantages of GET
• Advantages of POST
• Disadvantages of GET
• Disadvantages of POST

What is POST?

POST is a method that is supported by HTTP and depicts that a web server accepts the data included in the body of the message. POST is often used by World Wide Web to send user generated data to the web server or when you upload file.

Features of GET

Here, are the important features of GET:

• It is very easy to bookmark data using GET method.
• The length restriction of GET method is limited.
• You can use this method only to retrieve data from the address bar in the browser.
• This method enables you to easily store the data.

Features of POST

Here are the important features of POST:

• POST method request gets input from the request body and query string.
• Data passed using the POST method will not visible in query parameters in browser URL.
• parameters of POST methods are not saved in browser history.
• There is no restriction in sending the length of data.
• It helps you to securely pass sensitive and confidential information like login details to server.

GET Method Example

Here is an example of GET method:

GET/RegisterStudent.asp?user=value1&pass=value2

POST Method Example

Here is an example of POST method:

POST/RegisterStudent.asp HTTP/1.1 Host: www.guru99.com user=value1&pass=value2

A form using the default application/x-www-form-urlencoded content type:

Difference between a GET and POST

Here are the major differences between GET and POST:

GET	POST
In GET method, values are visible in the URL.	In POST method, values are not visible in the URL.
GET has a limitation on the length of the values, generally 255 characters.	POST has no limitation on the length of the values since they are submitted via the body of HTTP.
GET performs are better compared to POST because of the simple nature of appending the values in the URL.	It has lower performance as compared to GET method because of time spent in including POST values in the HTTP body.
This method supports only string data types.	This method supports different data types, such as string, numeric, binary, etc.
GET results can be bookmarked.	POST results cannot be bookmarked.
GET request is often cacheable.	The POST request is hardly cacheable.
GET Parameters remain in web browser history.	Parameters are not saved in web browser history.

Check our tutorial on Difference Between HTTP and HTTPS:- Click Here

Advantages of GET

Here, are benefits/ pros of using GET:

• The GET method can retrieve information identified by the request-URl (Uniform Resource Identifier).
• GET requests can be viewed in the browser history.
• It enables you to save the results of a HTML form.
• You can easily use GET method to request required data.

Advantages of POST

Here, are benefits/ pros of using POST:

• This method helps you to determine resource URI.
• Specifying a new resource location header is very easy using location header.
• You can send a request to accept the entity as a new resource, which is identified by the URI.
• You can send user-generated data to the web server.
• It is very useful when you do not have any idea about the resource you have to keep in the URL.
• Use POST when you need the server, which controls URL generation of your resources.
• POST is a secure method as its requests do not remain in browser history.
• You can effortlessly transmit a large amount of data using post.
• You can keep the data private.
• This method can be used to send binary as well as ASCII data.

Disadvantages of GET

Here, are cons/drawback of using GET:

• GET can’t be used to send word documents or images.
• GET requests can be used only to retrieve data
• The GET method cannot be used for passing sensitive information like usernames and passwords.
• The length of the URL is limited.
• If you use GET method, the browser appends the data to the URL.
• You can easily bookmark Query string value in GET

Disadvantages of POST

Here, are cons/drawback of using POST:

• It is not possible to save data as the data sent by the POST method is not visible in the URL.
• You cannot see POST requests in browser history.
• This method is not compatible with many firewall setups.
• You cannot use spaces, tabs, carnage returns, etc.
• This method is not compatible with some firewall setups.
• POST method takes lots of time when uploading the large binary file.

KEY DIFFERENCE:

• In GET method, values are visible in the URL while in POST method, values are NOT visible in the URL.
• GET has a limitation on the length of the values, generally 255 characters whereas POST has no limitation on the length of the values since they are submitted via the body of HTTP.
• GET method supports only string data types while POST method supports different data types, such as string, numeric, binary, etc.
• GET request is often cacheable while POST request is hardly cacheable.
• GET performs are better compared to POST.

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HTTP request methods

HTTP defines a set of request methods to indicate the desired action to be performed for a given resource. Although they can also be nouns, these request methods are sometimes referred to as HTTP verbs. Each of them implements a different semantic, but some common features are shared by a group of them: e.g. a request method can be safe, idempotent, or cacheable.

The GET method requests a representation of the specified resource. Requests using GET should only retrieve data.

The HEAD method asks for a response identical to a GET request, but without the response body.

The POST method submits an entity to the specified resource, often causing a change in state or side effects on the server.

The PUT method replaces all current representations of the target resource with the request payload.

The DELETE method deletes the specified resource.

The CONNECT method establishes a tunnel to the server identified by the target resource.

The OPTIONS method describes the communication options for the target resource.

The TRACE method performs a message loop-back test along the path to the target resource.

The PATCH method applies partial modifications to a resource.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

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Чем отличаются HTTP-методы GET и POST

HTTP-методы GET и POST — самые распространённые способы отправить или получить данные с сервера. Но в разных случаях оба метода могут быть небезопасными или неудобными в использовании. В этой заметке рассмотрим, какой метод когда использовать.

GET — метод для чтения данных с сайта. Например, для доступа к указанной странице. Он говорит серверу, что клиент хочет прочитать указанный документ. На практике этот метод используется чаще всего, например, в интернет-магазинах на странице каталога. Фильтры, которые выбирает пользователь, передаются через метод GET .

:authority: htmlacademy.ru :method: GET :path: /tutorial/php/http-header 

POST — метод для отправки данных на сайт. Чаще всего с помощью метода POST передаются формы.

URL-адрес запроса: https://htmlacademy.ru/consulting Метод запроса: POST Код состояния: 200 

Формат запроса

Протокол HTTP очень прост и состоит, по сути, из двух частей — заголовков и тела запроса или ответа.

Тело запроса — это информация, которую передал браузер при запросе страницы. Но тело запроса присутствует только если браузер запросил страницу методом POST . Например, если отправлена форма, то телом запроса будет содержание формы.

Пример GET-запроса. Информация передаётся прямо в заголовке.

GET /blog/?name1=value1&name2=value2 HTTP/1.1 Host: htmlacademy.ru 

Пример POST-запроса. Информация передаётся в теле запроса:

POST /blog/ HTTP/1.1 Host: htmlacademy.ru name1=value1&name2=value2 

GET для безопасных действий, POST для опасных

Говоря совсем просто, GET-запросы лучше не использовать с приватной информацией. Вот почему:

• Они кешируются. Это значит, что логин и пароль, переданные через GET-запрос, могут остаться в интернете навсегда, например, в веб-архиве или кеше Гугла.
• Остаются в истории браузера. Чтобы узнать, какие данные отправлялись, достаточно нажать Ctrl+H.
• Сохраняются в закладках и пересылаются. Можно не обратить внимания и опубликовать в соцсетях или отправить ссылку с приватной информацией в GET-запросе.
• Сохраняются в логах сервера. Например, нельзя отправлять данные банковских карт через GET-запрос, так как это создаёт риски для пользователей.

Таким образом, любые важные данные — логины, пароли, данные карты, персональные данные — лучше передавать с помощью метода POST . Также метод POST поддерживает тип кодирования данных multipart/form-data , что позволяет передавать файлы.

Ещё раз коротко

• Фильтры в интернет-магазинах
• Передача параметров через ссылку
• Другие безопасные запросы

• Любые формы с паролями или банковскими картами
• Формы заявок с персональными данными
• Отправка файлов

Полезные материалы

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What Is the Difference Between GET and POST Methods?

When a client communicates with a server over the web, this process is enabled by the Hypertext Transfer Protocol (HTTP). HTTP is a request-response protocol between a client and a server.

The GET and POST methods are the two most common HTTP request methods. They are used to retrieve or send data to a server. They are an integral part of the client-server model that enables the communication between a client and a server through the World Wide Web (WWW).

In this tutorial, we’ll see the difference between these two methods:

2. The GET Method

GET is used to request data from a specified resource. It can retrieve any visible data to a client, such as HTML documents, images, and videos:

To send a GET request, a client needs to specify the URL of the resource it wants to retrieve. The request is then sent to the server, which processes the request and sends the requested data back to the client.

3. The POST Method

The POST sends data to a server to create or update a resource. For example, it is often used to submit an HTML form to a server:

To send a POST request, a client needs to specify the URL of the resource to which it wants to send data and the data itself. The request is then sent to the server, which processes the request and sends a response back to the client.

The POST method is often used to submit forms or upload files to a server.

4. Differences Between GET and POST

4.1. Visibility

When using GET, data parameters are included in the URL and visible to everyone. However, when using POST, data is not displayed in the URL but in the HTTP message body.

4.2. Security

GET is less secure because the URL contains part of the data sent. On the other hand, POST is safer because the parameters are not stored in web server logs or the browser history.

4.3. Cache

GET requests can be cached and remain in the browser history, while POST requests cannot. This means GET requests can be bookmarked, shared, and revisited, while POST requests cannot:

4.4. Server State

GET requests are intended to retrieve data from a server and do not modify the server’s state. On the other hand, POST requests are used to send data to the server for processing and may modify the server’s state.

4.5. Amount of Data Transmitted

The GET method is limited to a maximum number of characters, while the POST method has no such limitation. This is because the GET method sends data through the resource URL, which is limited in length, while the POST method sends data through the HTTP message body, which has no such limitation.

4.5. Data Type

The GET method supports only string data types, while the POST method supports different data types such as string, numeric, binary, and so on.

5. Summary

In this article, we looked at the difference between the GET and POST methods. Both methods are essential for client-server communication through the WWW but have different purposes and limitations. It is important to choose the appropriate method based on the specific needs of the client and the server.

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