Combine try/catch with async/await

As an example, I will use a dummy JSON endpoint to fetch a to-do task.

If the task is not completed, the function will throw an error. Otherwise, it will return the title of the task.

javascript
const fetchData = async () => {
    
    try{
        
        // Declaring URL to fetch
        let url = 'https://jsonplaceholder.typicode.com/todos/1';
        
        // Fetching the endpoint
        let res = await fetch(url); 
        
        // Getting JSON variables
        let { completed, title } = await res.json();
        
        // Throw error if the task is not completed
        if(!completed) throw('Not completed');
        
        // Return title
        return title;
        
    }
    catch(err){
        
        // Create alert of that error
        alert(err);
        
    }
    
}

This is a way to combine try/catch with async/await.