Curl example post json javascript. I need to use CURL GET request with a Json parameters.

Curl example post json javascript for instance, with headers and json body ) and then click in "generate code" and choose "curl" option. Feb 8, 2023 · This article explains what HTTP requests are and how to POST JSON data in JavaScript. In today's cloud-driven world, efficient data transfer is crucial for businesses leveraging server-side applications. Jun 27, 2025 · A cURL POST refers to a POST request made using cURL. Learn the benefits and best practices of each method and boost your development skills Generate Code Snippets for Curl POST Form Example Convert your Curl POST Form request to the PHP, JavaScript/AJAX, Node. Basic cURL POST Request The basic syntax for a cURL command to POST data is: Dec 19, 2023 · To post JSON data using Curl, you need to set the Content-Type of your request to application/json and pass the JSON data with the -d command line parameter. Learn about common pitfalls and handy tools to fetch JSON data. url_name: Path `categories. This article will guide you through the process of making a POST request with a JSON payload using cURL, taking a simple JSON object as an example. Dec 7, 2023 · This article provides 12 practical examples of using the Curl command-line tool, with a brief description of each Curl example. Nov 15, 2024 · According to recent statistics, JSON has emerged as the preferred format for over 70% of web APIs, making it crucial to understand how to effectively use cURL for POST operations. Aug 20, 2025 · Using the Fetch API The Fetch API provides a JavaScript interface for making HTTP requests and processing the responses. A common task is posting **raw body data** (e. This method sends the data in the request and is suitable for most use cases. That’s because it’s lightning-fast, flexible, and supports a wide … Apr 15, 2020 · No need install or require body-parser and it's important to send the right content-type header I would like to use cURL to not only send data parameters in HTTP POST but to also upload files with specific form name. When making a POST request with cURL, you're sending data to a server or an API. Dec 3, 2023 · If you want to post JSON data with Curl, you need to set the Content-Type to application/json and use the -d parameter to pass JSON to Curl. Decode the response and Return the response as a string. From submitting form data and uploading files to creating new resources, cURL POST requests are at the heart of client-server communication. It represents data as key-value pairs, similar to a dictionary or hashmap in programming languages. Follow our step-by-step guide to understand and execute cURL commands for sending POST requests. In this Curl Request With Bearer Token Authorization Header example, we send a GET request to the ReqBin echo URL. Whether you‘re a seasoned data engineer or just getting started with web scraping, mastering these tools and techniques will serve you well in your career. It must match the provided content type. worked fine. Sep 17, 2008 · @tom-wijsman explanation: curl -X POST implies an HTTP POST request, the -d parameter (long version: --data) tells curl that what follows will be POST parameters, and @filename designates the contents of the file filename as parameter. Such as if you POST JSON to a server and want to more accurately tell the server about what the content is: Jun 29, 2024 · JSON JSON (JavaScript Object Notation) is the most widely used format for sending data to web APIs. Click Run to execute Curl POST Body example online and see results. Nov 14, 2022 · The Curl to JavaScript Converter uses the vanilla JavaScript XMLHttpRequest calls for the generated code. Jan 10, 2018 · Learn how to make PHP API calls using cURL! Everything you need to know about making correct cURL GET, POST, PUT, and DELETE requests in PHP. My Json will be like: { "key1" :[{subkey1":"subvalue1","subkey Jul 19, 2025 · Discover how to make API requests using curl and JavaScript fetch in this detailed guide. Test APIs, websites, and web services and validate server responses without installing additional software or plugins. To be able to automatically extract information from the web, to fake users, to post or upload data to web servers are all important tasks Aug 31, 2023 · Run, save, and collaborate Curl commands directly from your browser. Curl examples include sending a JSON file to a server, submitting a web form, user authentication, proxy support, saving the server response to disk, and more. Fetch is the modern replacement for XMLHttpRequest: unlike XMLHttpRequest, which uses callbacks, Fetch is promise-based and is integrated with features of the modern web such as service workers and Cross-Origin Resource Sharing (CORS). Run and test your Curl commands online with the online ReqBin Curl Client and convert them to JavaScript code when ready. The JSON content type is set using the -H "Content-Type: application/json" command line parameter. 82. It is frequently used in web development to automate web scraping operations, test APIs, and retrieve files. js HTTP requests with practical examples. Discover best practices, and proxy integration steps to enhance web scraping, API requests, and automation. Nov 29, 2023 · For example, if you send JSON to a server, you must specify the content type of the data in the body of the POST message using the Content-Type header: application/json and application/xml for XML. JSON curl 7. In this article, we will learn how to make REST API requests using Curl. exe; curl by itself is a Powershell alias for the Invoke-WebRequest cmdlet, which can do most of what the cURL program can do but has very different argument syntax. Nov 5, 2023 · Use languages like Python and Bash for additional flexibility cURL supports easily reading data from any file – JSON, XML, CSV, text, images, PDFs, archives – you name it! I hope these examples help you use cURL more effectively in your own projects. This guide will walk you through the process of using cURL to post JSON data, a common task in modern web development and API interactions. Double quotes in JSON must be escaped with the backslash "\" on Windows computers. JSON data is passed as a string. Aug 1, 2024 · In modern web development, sending JSON data to a server is a common task, especially when working with RESTful APIs. Please let me know if you have any other questions! Jan 4, 2024 · In this article we learned how to properly perform a curl POST request with practical examples For example, if you’re sending JSON in the request body, you need to tell the web server to expect JSON content by setting the Content-Type header to application/json. Complete guide to using cURL commands in JavaScript: converting to fetch API, axios, and Node. We do not transmit or record the curl commands you enter or what they're converted to. Click Send to execute the POST JSON example online and see the results. The Content-Type request header specifies the media type for the resource in the body. Master API testing and debugging with this step-by-step guide! Apr 26, 2025 · JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. Dec 13, 2023 · Blog / webscraping How to use cURL in Javascript (and its alternative) If you like cURL and use JavaScript (Nodejs) daily, you might wonder how to use cURL into your JavaScript programs. Sep 26, 2025 · Learn how to handle and send JSON with cURL using files, inline data, environment variables, and jq. cURL is a versatile and widely used CLI that allows you to make HTTP requests. { ValidationError: data validation failed: categories. JSON (JavaScript Object Notation) is a lightweight, human-readable format that has become the standard for data interchange on the web. js. It supports various protocols, including HTTP, HTTPS, FTP, and many others. name: Path `categories. Many receivers of POST data do not care about or check the Content-Type header. I want to test my Spring REST application with cURL. Jul 23, 2025 · One of the simplest way to post JSON data with cURL using the '-d' or '--data' flag followed by the JSON payload enclosed in single quotes. cURL is a powerful command-line tool used for transferring data between servers, including HTTP requests and responses. Whether you're working with REST APIs, testing endpoints, or learning how to interact with web services, our tool makes it easy to translate curl commands into the programming language of your choice. Learn Curl with an extensive database of handpicked Curl examples. A comprehensive guide for developers working with REST APIs. The JavaScript/AJAX code was automatically generated for the Curl POST Basic Authentication Level up your programming skills with exercises across 52 languages, and insightful discussion with our dedicated team of welcoming mentors. In this POST JSON example, we send JSON data to the ReqBin echo URL with the appropriate Accept and Content-Type HTTP headers. To make it even more easy, you can use jQuery to send an AJAX request. In this blog post, we will discuss how to use cURL to POST JSON data to a server. Jan 19, 2024 · The response Content-Type header specifies the type of data returned by the server. This is a static website (hosted on GitHub Pages) and the conversion happens entirely in your browser using JavaScript. I need to use CURL GET request with a Json parameters. You can send JSON with a POST request using cURL using the -X option with POST and the -d option (data). In this Curl POST JSON data example, we send JSON to the ReqBin echo URL. GitHub Gist: instantly share code, notes, and snippets. js, Curl/Bash, Python, Java, C#/. Dec 19, 2023 · To post JSON data using Curl, you need to set the Content-Type of your request to application/json and pass the JSON data with the -d command line parameter. name` is required. In this Curl Content-Type example, we are sending JSON to the ReqBin echo URL. Click Run to execute the Curl JSON Request Example online and see the result. Dec 22, 2015 · Note that you do have to provide the path to a curl executable, or at least specify curl. This tutorial will look at using cURL with JavaScript and Node. Dec 19, 2023 · To send a Curl POST request, you need to pass the POST data with the -d command line option, and the authorization header and bearer token are passed with the -H command line option. In this guide, you'll share some examples of how curl can be used in JavaScript. json parameters, Curl will automatically send the Content-Type: application/json HTTP header with your request. Jun 21, 2022 · How to create PHP curl post and other request methods with a basic introduction and more use case examples. Click Run to execute the Jul 23, 2025 · Using the curl_setopt_array () function, setting a large number of options for cURL without repetitively calling it. In this Sep 19, 2016 · Here is a complete example: After spending hours tinkering with incomplete code snippets I finally managed to post some json from javascript, pick it up using php on a server, added a data field and finally updated the original web page. curl is a command in linux (and a library in php). Master API interactions with this simple command-line tool. What you really want to do is make an HTTP (or XHR) request from javascript. g. Dec 3, 2023 · JavaScript/AJAX code for Curl POST Example This JavaScript/AJAX code snippet was generated automatically for the Curl POST example. Dec 11, 2023 · In this Curl POST with Basic Authentication header example, we sent a request to the ReqBin echo URL with sample POST data. The increasing amount of applications moving to the web has made "HTTP Scripting" more frequently requested and wanted. Dec 10, 2008 · There is a good way to learn how to use curl for http requests by examples. Jun 4, 2025 · Use cURL in JavaScript to Automate Web Requests with Ease cURL handles over billions of data transfers daily across the web. Aug 22, 2014 · I'm not sure if this is possible, but i am trying to curl a post, but with a json as the parameters, like such: Jan 16, 2023 · To post JSON data to the server using Curl/Bash, you need to provide the JSON data in the HTTP POST request body and pass the "Content-Type: application/json" request header. In this guide, we’ll delve into how to use cURL to send POST requests, particularly focusing on how to post a request body. At Cyfuture Cloud, we understand the importance of seamless data posting for our customers' hosting needs. However, I want to test it with cURL. In this example, we send the request body to the ReqBin echo URL using Curl. Click Run to execute the Curl POST Basic Auth example online and see the result. to is a free developer tool that helps you convert curl commands to code in multiple programming languages. Example JSON Dec 19, 2023 · JSON data is passed as a string. Your command line should have a -d/--data inserted before the string you want to send in the PUT, and you want to set the Content-Type and not Accept. It is commonly used for Jul 23, 2025 · Curl is a command-line tool for making web requests, often used directly from the terminal. , JSON, XML, or plain text) to a server. May 27, 2025 · New JavaScript developers commonly ask if they can or need to use curl to perform HTTP requests. May 3, 2024 · How do I pass authorization header using cURL? ( executable in /usr/bin/curl). This can be done in several ways: from sending simple form data to posting a JSON body. Discover the powerful features of Apidog, and enhance your development skills with our step-by-step tutorial. ba3a. Dec 11, 2023 · POST data is passed to Curl with the -d option. JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy to read and write for humans and easy to parse and generate for machines. : the copied command may contain cookies or other sensitive data. In this Curl POST JSON example, we send JSON to the ReqBin echo URL. Sending JSON with CurlRun What is curl? curl is a command-line tool for transferring data with URLs. The JavaScript/AJAX code was automatically generated for the Curl POST JSON example. This blog demystifies why raw body data might appear Explore curl command examples and converted code samples. Essentially, Curl prints the web response to the terminal. If that header is not good enough for you, you should, of course, replace that and instead provide the correct one. Learn how to send a POST request with cURL. Nov 20, 2025 · curl POST examples. url_name` is required. Jan 16, 2023 · To send the Content-Type header using Curl, you need to use the -H command-line option. Useful links: Where i was downloading the curl for windows command line? For more information on how to install and get curl working with cygwin just go here I hope it Apr 21, 2023 · Introduction cURL is a well-known command-line utility for transmitting data over multiple protocols such as HTTP, FTP, and SFTP. In this Curl POST with Basic Authentication header example, we sent a request to the ReqBin echo URL with sample POST data. For example, you can use the -H "Content-Type: application/json" command-line parameter for JSON data. One of the five popular HTTP methods for making requests and interacting with your servers is the POST method, which you can use to send data Learn how to receive, parse, and process JSON responses using curl with practical examples and best practices for API integration. Jun 3, 2023 · Curl Simplified: A Beginner’s Guide for JavaScript Developers Learn how to make HTTP requests with Curl in JavaScript like a pro. In this blog post, we will focus on using cURL to make a JSON POST request. This option works as a shortcut and provides a single option that replaces these three: Mar 30, 2023 · I am testing a API using CURL in my local server. curl. This approach works best with RESTful HTTP APIs as found at Twitter, Facebook, various other web services including Ruby on Rails as well as HTTP APIs of Generate Code Snippets for Posting JSON The Server Curl Example Convert your Posting JSON The Server Curl request to the PHP, JavaScript/AJAX, Node. Curl typically makes an HTTP request. Using curl_exec () to execute the POST request. Curl is a powerful command-line tool that is widely used for Dec 19, 2023 · To post JSON data using Curl, you need to set the Content-Type of your request to application/json and pass the JSON data with the -d command line parameter. In this Curl GET example, we send a Curl request to the ReqBin echo URL. This comprehensive guide explores the intricacies of sending POST requests with cURL, from basic syntax to advanced authentication methods. Nov 22, 2025 · Here curl allows you to tell the api which format you prefer, and the server sees that header and sends JSON back. , categories. It gives you the equivalent command line. Using this vocab you'll find a bunch of examples, for starters: Sending authorization headers with jquery and ajax Essentially you will want to call $. For example, curl -L ip. Jul 14, 2023 · Curl automatically adds an Accept: */* request header if no additional headers are passed, which tells the server that the Curl client can accept data in any format. See why 850,000 users use ReqBin online Curl Client for testing their APIs online! Jul 18, 2023 · Unlike a GET request, which retrieves data, a cURL POST request sends data to a server, a fundamental mechanism that powers interactivity on the web. I am trying to post a JSON d Mar 6, 2025 · Learn how to send JSON data using cURL with simple command examples. Whether you‘re just getting started with web scraping or you‘re a seasoned developer looking to deepen your understanding, this guide has something for you. So i would like to know how to properly write a curl post with nested json objects My mongoose schema is the following : Jan 6, 2023 · HTTP requests allow your front-end application to interact successfully with a back-end server or database. Learn common HTTP request patterns for GET, POST, PUT, DELETE with authentication. Generate Code Snippets for How POST JSON Data Using Curl? Example Convert your How POST JSON Data Using Curl? request to the PHP, JavaScript/AJAX, Node. We‘ve covered a lot of ground in this guide, from the fundamentals of cURL, HTTP, and JSON to practical examples and best practices for making POST requests and processing JSON data. NET code snippets using the ReqBin code generator. Utility for converting cURL commands to codecurl from Google Chrome Open the Network tab in the DevTools Right click (or Ctrl-click) a request Click "Copy" → "Copy as cURL" "Copy as cURL (bash)" Paste it in the curl command box above This also works in Safari and Firefox. To post a JSON payload, we need to set the Content-Type header to application/json and provide the data as a string argument to the -d flag: curl -X POST -H "Content-Type: application/json" -d 4 days ago · When working with APIs, testing, or integrating services, `curl` is a go-to tool for sending HTTP requests. Download the newest version of Postman, make any http request configuration as you wish at user interface level (post, put, get. tech fetches IP address details in JSON format, just like visiting the site in a browser. From what I can understand, I need to attach a stringified object to the body of the request, e. The Art Of Scripting HTTP Requests Using curl Background This document assumes that you are familiar with HTML and general networking. Close the cURL. Here is some example code: Mar 10, 2025 · Learn how to send POST requests using cURL with detailed examples, headers, and data payloads. curl is widely used for testing, debugging, and interacting with APIs and web services. Click Run to execute the Curl POST JSON example online and see result. Common curl Options -X, --request: Specify request method (GET, POST, etc. If you‘ve ever needed to retrieve data from a web API, chances are that data was returned in JSON format. This Jun 20, 2025 · Learn how to use PowerShell curl commands with our tutorial covering Invoke-WebRequest, Invoke-RestMethod, aliases, authentication, and real-world examples. Supported languages include JavaScript, Python, PHP, Go, Ruby, C#, and Java. It tells me the data wasnt sent through the curl command correctly. Example 1: This example illustrates passing the JSON Data in a URL using cURL in PHP by using the cURL POST Apr 7, 2015 · Curl can post binary data from a file so I have been using process substitution and taking advantage of file descriptors whenever I need to post something nasty with curl and still want access to the vars in the current shell. 0 introduced the --json option as a new way to send JSON formatted data to HTTP servers using POST. ) -H, --header: Add HTTP headers -d, --data: Send data in the Jan 26, 2025 · Learn how to send data with cURL POST requests Complete guide with clear commands, detailed examples, and answers to common questions. What is cURL? cURL (Client URL I recommend cygwin: I ended up installing cygwin with CURL which allow us to Get that Linux feeling - on Windows! Using Cygwin command line this issues have stopped and most important, the request syntax used on 1. cURL allows you to send HTTP requests to a server and receive responses back. JSON (JavaScript Object Notation) is a lightweight data format that is easy to read and write. The command line parameter -H "Content-Type: application/json" specifies the JSON content type. And one of the quickest and easiest ways to fetch JSON from an API is by using cURL, a powerful command-line tool for making HTTP requests. May 4, 2018 · Have you replaced the your_filename and ENTER-KEY values? Also, the response should be shown in the console of your browser (hit F12 in chrome/firefox) Jun 12, 2023 · How do I POST JSON data with cURL As a software engineer, you may be familiar with cURL, a command-line tool for transferring data using various protocols. Perfect for developers looking to streamline their API workflows. Jan 12, 2023 · For example, if you send a JSON file using the command line -d @data. . With the Fetch API, you make a request Dec 1, 2023 · For example, when sending JSON to the server, you can specify the data type in the request body using the Content-Type: application/json header and tell the server that the Curl client is expecting JSON using Accept: application/json. Jan 25, 2025 · New JavaScript developers commonly ask if they can or need to use curl to perform HTTP requests. The HTTP POST method is used to send data to the remote server. I use Ubuntu and installed cURL on it. 3 Curl doesn't exist in JavaScript, instead you can use XMLHttpRequest. Data is passed to Curl using the -d command-line option. However, developers often encounter a frustrating issue: the server receives an empty request body despite seemingly correct `curl` commands. Apr 15, 2023 · curl will send form urlencoded by default, so for json the Content-Type header must be explicitly set This gist provides examples for using both formats, including how to use sample data files in either format with your curl requests. We’ll talk about the following topics: What is cURL in JavaScript? Is cURL in JavaScript Apr 16, 2024 · In this ultimate guide, I‘ll share my knowledge on how to effectively use cURL to POST JSON data, as well as insights I‘ve gained over the years on API design, performance, and best practices. Aug 4, 2023 · This will send a POST request to the specified API endpoint with the data you provided in JSON format. Be careful if you're sharing the command with other Jul 19, 2025 · Learn how to master API requests using curl and JavaScript in this comprehensive guide. You must also specify the data type using the Content-Type: application/json request header. Dec 6, 2024 · Learn how to effectively send JSON data using curl, including command-line techniques and file-based approaches for API interactions. Mar 13, 2025 · Learn how to use cURL in JavaScript with multiple methods. Real examples for Slack & Google Translate Jan 16, 2023 · Additionally, you can pass an "Accept: application/json" header, which tells the server that the client is expecting JSON data. It supports numerous protocols including HTTP, HTTPS, FTP, FTPS, SCP, SFTP, LDAP, and more. Curl has many other options and features that you can use. Click Run to execute the Curl GET Request example online and see the results. Jul 31, 2025 · How to Post JSON Data Using cURL CURL is a standard command-line tool for API testing, the question arises: How can one send JSON data using a cURL command? This article guides you through the process of POSTing JSON data using the cURL command. ajax with a few options for the header, etc. : Apr 26, 2025 · One common use of cURL is to POST data to a server. While it's possible to use the libcurl library in JavaScript, there are also other alternatives Dec 28, 2023 · This article explains how to use curl to make POST requests. cURL supports various content types, including JSON and XML, making retrieving data from web services consistent across responses. How should I go about doing that ? HTTP Post parameters: userid = 12345 Apr 21, 2015 · I'm trying to POST a JSON object using fetch. Jan 16, 2023 · To post JSON to a REST API endpoint using Curl/Bash, you must send an HTTP POST request to the REST API server and provide JSON data in the body of the Curl/Bash POST message. Sep 9, 2025 · Master cURL POST requests with clear examples for JSON, forms, files, headers, and authentication + tips for testing and debugging APIs fast. I wrote my POST code at the Java side. dxtdvi saxqro jdj hnyyn iiwrdr drfkf cebn nzks zangv qpd nbgou wvok vjwvz tdzn nvfones