Check if property exists using React.js

Question

I\'m new to using react.js, and am trying to write a re-usable component that has an optional property passed to it. In the component, that optional property pulls data from

Answer 1

I figured this out. Apparently it was a syntax issue - you need to use a string when searching for properties in objects. The line below works:

if ('parent_task' in current_task)