To use an async function to await user input from an onclick event, you would need to do the following:

1. Create the async function that will handle the user input. This function should use the await keyword to pause execution until the user has provided their input.

async function handleInput() {
const input = await getInputFromUser();
// Do something with the input
}

2. Add an event listener to the element that the user will click on to trigger the input handling. This event listener should call the async function when the element is clicked.

const element = document.querySelector('#input-trigger');
element.addEventListener('click', handleInput);

3. When the user clicks on the element, the handleInput function will be called and will wait for the user to provide their input. Once the input has been received, the function will continue executing and can do something with the input.

It’s important to note that this approach will only work if the function that gets the input from the user is also asynchronous. If the function is synchronous, the handleInput function will not wait for the input to be provided and will continue executing immediately.

I hope this helps! Let me know if you have any other questions.