API’s

Question

I’m trying to learn how to make and use API’S. From this code I can understand most of it until the
.explanation on line 30. can anyone explain why its there and what it does? cus i looked it up and no results are found

https://code.sololearn.com/W3rRyN9RVM2b/?ref=app

Answer 1

https://www.w3schools.com/whatis/whatis_json.asp

Answer 2

data is a JSON object. Its contents are accessed using dot notation. So
data.explanation
accesses the data in the explanation field of the JSON object.

Answer 3

JSON is a format for saving data. It's very simple and very popular. You should take a look at it.

Answer 4

The call to the API fetches a JSON object. This is often the case for data APIs. This object is then assigned to the data variable for further manipulation.
https://www.digitalocean.com/community/tutorials/how-to-work-with-json-in-javascript

Answer 5

In the code three fields of the JSON object are accessed: explanation, title, and url.

Answer 6

So the JSON object looks probably something like this:
{"explanation": "some text",
"title": "some text",
"url": "an image url"}

Answer 7

ohh. so do i have to learn json?

Answer 8

okay

Answer 9

Okay so I just webt over the json stuff but i didnt see anything that has .explanation. or anything really like that

Answer 10

mainly what i learned was stringify and parse and some other stuff.

Answer 11

Ok, thanks. But why is that code ur showing not in his code? Is it in some url or something

Answer 12

You can see the full JSON file here:
https://api.nasa.gov/planetary/apod?api_key=XA6IuMbstRjVQf0EFkp2cdhQPOB4QuLhsMZUu4B5

Answer 13

oh interesting. i see. so exactly how can u see that data? I learned about .parse form recieving data from a web url. but how do u get it?

Answer 14

did he write that?

Answer 15

That's lines 27-28. With the API's url in line 23.

Answer 16

Okay thank u

Answer 17

You're welcome.

Answer 18

wait. also one last thing. Do u have to parse? In w3schools they say when recieving information form a web url its stringified so it will say the values and stuff. so why didnt he parse?

Answer 19

They used the .json() method instead:
https://developer.mozilla.org/en-US/docs/Web/API/Response/json

Answer 20

hmm okay!