JSON in JS

JSON
JSON means JavaScript Object Notation
JSON is Text Format for storing and exchanging data
JSON is array of object

JSON format

[ ------------------> ARRAY
{-----------> OBJECT1
----
----
},----------> OBJECT1
{-----------> OBJECT2
----
----
----
}-----------> OBJECT2
]-------------------> ARRAY

API
API means Application Programming Interface
It build the communication between frontend and backend

Fetch

• Fetch is a function we give the parameter as a data URL which means (JSON file)
• This function return promise
• If the promise resolve means it will go to the .then function if it is resolve means again it will go to the next .then function
• If the promise does not resolve means it will go to the .catch function

const api=fetch('https://fakestoreapi.com/products/1')
api.then(()=>console.log("success"))
   .catch(()=>console.log("rejected"))

Output:success

if the URL have some mistake means it will go to .catch block