Learning Node.js Development

Using the getNote function

Let's work on this method. Now, the first thing I'll do is fill out, inside of app.js, a variable called note which is going to store the return value from getNote:

} else if (command === 'read') {  var note = notes.getNote(argv.title);

Now, this could be an individual note object or it could be undefined. In the next line, I can use an if statement to print the message if it exists, or if it does not exist. I'll use if note, and I am going to attach an else clause:

} else if (command === 'read') {  var note = notes.getNote(argv.title);  if (note) {        } else {        }

This else clause will be responsible for printing an error if the note is not found. Let's get started with that first since it's pretty simple, console.log ...