How to troubleshoot issues with Promise

When working with Promises in JavaScript, it's common to encounter issues. Here are some troubleshooting steps to help you resolve these problems:

  • Check for promise rejection: Ensure you're properly handling rejections with .catch(). If a promise is rejected and not caught, it can lead to unhandled promise rejections.
  • Debug asynchronous flow: Use console.log() statements or breakpoints to trace the execution flow of your promises to identify where things are going wrong.
  • Verify promise resolution: Make sure that promises resolve as expected. You can use .then() to check the resolved value.
  • Use async/await: Simplify your promise handling. Using async/await can make the code easier to read and debug.
  • Inspect network requests: If you're working with fetch or AJAX calls, check the network tab in your browser's developer tools to see if requests complete successfully.
  • Thorough error messages: Read error messages closely. They often provide insights into what went wrong.

Promise JavaScript Debugging Asynchronous Error Handling