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JavaScript Posting Data with fetch()

Richard Preske
PLUS
Richard Preske
Courses Plus Student 4,356 Points

Converting a basic AJAX program

https://w.trhou.se/kplfqw47m7

I'm trying to convert one of the projects in the basic AJAX course. I replaced the XHR requests with fetch and promise all and I get no errors. I'm having trouble, however, displaying the data - rooms full, empty and employees in, out. Any suggestions?

1 Answer

Steven Parker
Steven Parker
231,184 Points

I see a few issues:

  • the data items are arrays of objects, and don't have a "message" property (lines 13 & 14)
  • the properties of an array ("for in") are just indexes use the values instead ("for of") (lines 36 & 58)
  • the "name" is a property of the item ("property") and not the array ("data") (lines 42 & 64)
Richard Preske
Richard Preske
Courses Plus Student 4,356 Points

Thanks, I'll check it out. The message property does work though displaying the array of objects when I logged to console - lines 13 and 14. Why?

Got it figured out, thanks again!

Steven Parker
Steven Parker
231,184 Points

Attempting to get a 'message" attribute from an array should give you "undefined". If you see something else, what's the complete code in the callback at that point?