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JavaScript Asynchronous Programming with JavaScript Understanding Promises Using Fetch

Is .json() the same as JSON.parse()?


1 Answer

Jennifer Nordell
Jennifer Nordell
Treehouse Teacher

Hi there, Kirt Perez! They are very similar, but not exactly the same. Yes, they both create JSON. However, the .json() is asynchronous and returns a Promise. While the JSON.parse is synchronous. The .json() takes the Response and turns it into JSON while the JSON.parse() takes a JSON formatted string and returns any one of a few data types.

For more information, I recommend the following:

Hope this helps! :sparkles:

karan Badhwar
.a{fill-rule:evenodd;}techdegree seal-36
karan Badhwar
Web Development Techdegree Graduate 18,135 Points

Hi, Jennifer Nordell, but on MDN it says, it returns a JavaScript Object not the JSON file. As, if it returns a JSON file, then how are we using it and extracting the JSON file to an Array of Objects to use. Moreover, @Guil also said it returns a JSON , but if it is returning the JSON, then where are we actually parsing the file into an array ?

MDN explanation below: -

Note that despite the method being named json(), the result is not JSON but is instead the result of taking JSON as input and parsing it to produce a JavaScript object.