HTTP Request Sender

logic that powers the "HTTP Request Sender (Basic)" tool. It's responsible for handling user input, making an HTTP GET request, and displaying the response or any errors. Here's a breakdown of what the selected code does: Element References: It begins by getting references to all the necessary HTML elements on the page using their IDs. These include the URL input field, the "Send GET Request" button, the area where the response will be displayed, and elements for showing error messages and a loading indicator. Event Listener: The sendRequestButton.addEventListener('click', async () => { ... }); line sets up an event listener. This means that whenever the "Send GET Request" button is clicked, the asynchronous function inside this listener will execute. Initial State and Validation: When the button is clicked, it first clears any previous error messages and the response output. It hides the loading indicator and disables the "Send GET Request" button to prevent multiple requests while one is in progress. It then checks if the URL input field is empty. If it is, an error message is displayed, the button is re-enabled, and the function stops. A basic URL validation is performed using new URL(url). If the input is not a valid URL format, it catches the error, displays an error message, re-enables the button, and stops. Making the HTTP Request: If the URL is valid, the loadingIndicator is displayed. It then uses the fetch(url) API to send an asynchronous HTTP GET request to the entered URL. response.text() is used to parse the response body as plain text. Response Handling: if (!response.ok): This crucial check verifies if the HTTP response status was successful (e.g., 200 OK). If the status code indicates an error (e.g., 404 Not Found, 500 Internal Server Error), it throws a new Error with the HTTP status and status text. If the response is successful, the responseText is displayed in the responseOutput textarea. Error Handling: The try...catch block wraps the fetch operation. If any error occurs during the network request (e.g., network disconnected, invalid URL, or an HTTP error caught by !response.ok), the catch block executes. It displays a user-friendly errorMessage and sets the responseOutput to "Failed to fetch response." Cleanup (finally block): The finally block always executes, regardless of whether the try block completed successfully or an error was caught. It hides the loadingIndicator and re-enables the sendRequestButton, making the tool ready for another request.