Html query string post

How to Send Query Params in GET and POST in JavaScript

To send query parameters in a POST request in JavaScript, we need to pass a body property to the configuration object of the Fetch API that matches the data type of the «Content-Type» header.

(async () =>  const response = await fetch('https://jsonplaceholder.typicode.com/posts',  method: 'POST', body: JSON.stringify( title: 'This will be the title', body: 'Setting the body property', userId: 1, >), headers:  'Content-type': 'application/json; charset=UTF-8' >, >) const data = await response.json() console.log(data) >)()

The body will always need to match the «Content-type» header.

Notice that you will also need to set the method property to «POST». Make sure you wrap your object into JSON.stringify in order to pass a proper JSON payload.

We can wrap the entire call into an async IIFE in order to use await . We can also create a helper function for later use that expects a URL and an object for the query parameters:

const post = async (url, params) =>  const response = await fetch(url,  method: 'POST', body: JSON.stringify(params), headers:  'Content-type': 'application/json; charset=UTF-8', > >) const data = await response.json() return data > // Then use it like so with async/await: (async () =>  const data = await post('https://jsonplaceholder.typicode.com/posts',  title: 'This will be the title', body: 'Setting the body property', userId: 1 >) console.log(data) >)() // Or using then: post('https://jsonplaceholder.typicode.com/posts',  title: 'This will be the title', body: 'Setting the body property', userId: 1, >).then(data => console.log(data)) 

Then we can call it either using async/await , or using a then callback.

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How to Send Query Parameters in GET

To send query parameters in a GET request in JavaScript, we can pass a list of search query parameters using the URLSearchParams API.

(async () =>  const response = await fetch('https://jsonplaceholder.typicode.com/comments?' + new URLSearchParams( postId: 1 >)) const data = await response.json() console.log(data) >)()

This will convert the object into a string with key-value pairs. Eg, the above example would become » postId=1 «. Notice that here, you don’t need to pass a method property for the Fetch API, as it uses GET by default. We can also use a helper function for this one too to make the call reusable:

const get = async (url, params) =>  const response = await fetch(url + '?' + new URLSearchParams(params)) const data = await response.json() return data > // Call it with async: (async () =>  const data = await get('https://jsonplaceholder.typicode.com/comments',  postId: 1, >) console.log(data) >)() // Calling it with then: get('https://jsonplaceholder.typicode.com/comments',  postId: 1, >).then(data => console.log(data))

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Query String при POST-запросах

Сегодня я столкнулся с интересным вопросом — для чего использовать query string при POST-запросе. Хотя я уже был знаком с этими понятиями, но всегда считал, что query string применяется только для GET-запросов. Однако, я начал изучать эту тему и хотел бы поделиться своим опытом и знаниями с вами.

Запросы GET и POST — это два основных метода HTTP-протокола, которые используются для отправки запросов на сервер. Обычно при GET-запросе параметры передаются в URL-адресе, а при POST-запросе — в теле запроса. Однако, иногда можно использовать query string и при POST-запросе, например, для передачи дополнительных параметров или сложных данных.

Один из примеров использования query string при POST-запросе — это передача дополнительных параметров, которые не нужны для обработки данных на сервере, но могут быть полезны на клиентской стороне. Например, можно передать дополнительный параметр для указания языка страницы или для сохранения идентификатора сессии на сервере.

Также, можно использовать query string при POST-запросе для передачи сложных параметров, которые трудно сериализовать в формате x-www-form-urlencoded или multipart/form-data . В этом случае можно передать параметры в формате JSON или XML через query string.

Важно понимать, что использование query string при POST запросе может быть не очень безопасным и требует осторожности, чтобы не раскрыть конфиденциальные данные или не нарушить безопасность запроса.

В результате своего исследования, я понял, что использование query string при POST запросе может быть полезным в некоторых случаях. Однако, его использование должно быть обосновано и необходимо учитывать потенциальные угрозы безопасности. Если у вас есть дополнительные вопросы по этой теме или вы хотите обсудить программирование в целом, не стесняйтесь написать мне в Telegram — «t.me/neocoda». Я всегда рад пообщаться!

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POST & GET In Javascript Without HTML Form (Simple Examples)

Welcome to a tutorial on how to send POST and GET without an HTML form in Javascript. So you want to send some data to the server in Javascript, but not involve the use of an HTML form?

An easy way to do a GET request without an HTML form is to use a query string:

Yep, it’s that simple. But there are more methods that we can use, let us walk through more examples in this guide – Read on!

TLDR – QUICK SLIDES

TABLE OF CONTENTS

POST & GET IN JAVASCRIPT

All right, let us now get into the various ways and examples of doing POST and GET without an HTML form.

METHOD 1) QUERY STRING

As in the introduction, a query string is one of the easiest ways to do GET without an HTML form – We are literally just appending data to the URL, and doing a redirection.

METHOD 2) AJAX

2A) AJAX POST

• Create a new FormData() object, append all the data you want to send.
• Create a new XMLHttpRequest() object, execute the AJAX request itself.

2B) AJAX GET

Doing a GET request with AJAX is still the same 2-steps process. But take extra note that we are creating a new URLSearchParams() object here for the data – The parameters are appended to the URL itself.

METHOD 3) FETCH

3A) FETCH POST

Now fetch() is supposedly the “advanced better version of AJAX” with more controls and stuff. Not too sure about that, but do take note that it is not supported in older browsers – You might want to stick with AJAX.

3B) FETCH GET

That’s right – Take note of how the data is appended to the URL string for the GET request again; Do not append the parameters to the body.

DOWNLOAD & NOTES

Here is the download link to the example code, so you don’t have to copy-paste everything.

SUPPORT

600+ free tutorials & projects on Code Boxx and still growing. I insist on not turning Code Boxx into a «paid scripts and courses» business, so every little bit of support helps.

EXAMPLE CODE DOWNLOAD

Click here for the source code on GitHub gist, just click on “download zip” or do a git clone. I have released it under the MIT license, so feel free to build on top of it or use it in your own project.

EXTRA BITS & LINKS

That’s all for this guide, and here is a small section on some extras and links that may be useful to you.

RESTRICTION – URL LENGTH LIMIT!

While appending URL search parameters is simple and easy, please take note that there is a maximum length limit to the URL. A quick search on the Internet turns out with different answers – 2048 characters, 2083 characters, 2000 characters. It depends on the browser and server, so yep, the general rule of thumb is not to exceed 2000 characters.

LINKS & REFERENCES

• Window.location – Web APIs | MDN
• URLSearchParams – MDN
• FormData – MDN
• Javascript AJAX – A Beginner’s Tutorial – Code Boxx
• Using Fetch – Web APIs | MDN
• How do I post form data with fetch API? – Stack Overflow
• Promise – MDN

TUTORIAL VIDEO

INFOGRAPHIC CHEATSHEET

THE END

Thank you for reading, and we have come to the end of this guide. I hope that it has helped you with your project, and if you want to share anything with this guide, please feel free to comment below. Good luck and happy coding!

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ASP QueryString Collection

The QueryString collection is used to retrieve the variable values in the HTTP query string.

The HTTP query string is specified by the values following the question mark (?), like this:

Parameter	Description
variable	Required. The name of the variable in the HTTP query string to retrieve
index	Optional. Specifies one of multiple values for a variable. From 1 to Request.QueryString(variable).Count

Examples

Example 1

To loop through all the n variable values in a Query String:

The following request is sent:

and names.asp contains the following script:

The file names.asp would display the following:

Example 2

The following string might be sent:

this results in the following QUERY_STRING value:

Now we can use the information in a script:

If you do not specify any variable values to display, like this:

the output would look like this:

COLOR PICKER

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