title: App Lab Mouse Coordinates
body: <p>I recently started using App Lab on Code.org (<a href="https://code.org/educate/applab" rel="nofollow noreferrer">found here</a>), which uses a strange JS library. What is the function to find mouse coordinates? I've looked all over and no one has mentioned it.</p>
  
  <p>(If you don't know what app lab is, it is a code.org compiler that lets you program JS and then send that to your phone, making mini apps)</p>