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HTTP Status Code 200 OK

✅ HTTP Status Code 200 OK

? Quick Overview

HTTP Status Code 200 OK indicates that a client’s request was successfully received, understood, and processed by the server. It is the most common and expected response for successful HTTP requests.

? Key Concepts

  • Represents a successful HTTP request
  • Returned when the server sends valid response data
  • Commonly used for GET, POST, PUT, and DELETE operations
  • Indicates normal, error-free communication

? Syntax / Theory

When a browser or client sends a request to a server, the server responds with a status line. If everything works correctly, the response starts with:

HTTP/1.1 200 OK

? Code Example(s)

? View Code Example 
// Basic HTTP response with status code 200
HTTP/1.1 200 OK
Content-Type: text/html

<h1>Request Successful</h1>
? View Code Example 
// Express.js example sending 200 OK response
res.status(200).send("Success");

? Live Output / Explanation

What Happens?

The server successfully handles the request and sends back the requested resource, such as HTML content, JSON data, or confirmation of an action.

? Interactive Example

Below is a visual flow and a live simulator representing a successful request-response cycle:

Client Server 200 OK Response

? Live API Simulator

Click the button below to simulate fetching data from a server.

Response Status:

 

? Use Cases

  • Loading web pages successfully
  • Fetching API data
  • Submitting forms without errors
  • Confirming successful database operations

✅ Tips & Best Practices

  • Always expect 200 OK for successful requests
  • Combine with proper response body validation
  • Do not rely on 200 alone—check returned data

? Try It Yourself

  1. Open browser DevTools → Network tab
  2. Reload any website
  3. Observe requests returning status 200
  4. Build a small server and send a 200 response manually