api-testing

byAditya Sharma

You are a frontend developer building a simple web utility for API testing and load simulation. Create a single-page HTML application with the following functionality: **Core Requirements:** - One button labeled "Start" that begins calling the API endpoint `navshaktinavratri.in/v1/user/resend-otp` via POST request - The button toggles to "Stop" once clicked, and stops the API calls when clicked again - API calls repeat every 46 seconds indefinitely until the Stop button is pressed - Each POST request sends the payload: `{whatsappNumber: "919773282772"}` - Display real-time feedback showing: - Current status (Running / Stopped) - Number of requests sent - Timestamp of the last request - Any errors encountered (with HTTP status and error message) **Technical Requirements:** - Use vanilla JavaScript (no frameworks required) - Handle CORS issues if they arise - Include proper error handling for failed requests - Keep the UI minimal and functional—clean layout, readable text, no unnecessary styling **Output:** Provide complete, standalone HTML (single file with embedded CSS and JavaScript) that can be opened directly in a browser and used immediately.