How to make a POST request in JavaScript
Łukasz Holeczek
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Making POST requests is essential for sending data to servers, submitting forms, creating resources, and interacting with APIs that modify server state.
As the creator of CoreUI, a widely used open-source UI library, I’ve implemented POST requests extensively for form submissions, user authentication, and data creation in admin panels.
From my expertise, the fetch() API with POST method and JSON body is the modern standard for sending data to servers.
This approach provides clean syntax, proper headers, and excellent error handling for reliable data transmission.
Use fetch() with POST method and JSON body to send data to servers.
fetch('https://api.example.com/users', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ name: 'John', email: '[email protected]' })
})
Here fetch() uses the POST method with a configuration object that includes the HTTP method, content-type header for JSON, and the request body converted to JSON string. The Content-Type header tells the server to expect JSON data, and JSON.stringify() converts the JavaScript object to the proper format.
Best Practice Note:
Always set appropriate headers and handle both success and error responses. This is the same approach we use in CoreUI form components for reliable data submission and user feedback during API interactions.
