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Axios
Axios is a Javascript library used to make http requests from node.js or XMLHttpRequests from the browser .

Fetch
The fetch  function is a Promise-based mechanism for programmatically making web requests in the browser. This project is a polyfill that implements a subset of the standard Fetch specification, enough to make fetch a viable replacement for most uses of XMLHttpRequest in traditional web applications.


JSONP
JSONP (JSON with padding) is used to request data from a server residing in a different domain than the client.



CORS
Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTPheaders to let a user agent gain permission to access selected resources from a server on a different origin (domain) than the site currently in use. A user agent makes across-origin HTTP request when it requests a resource from a different domain, protocol, or port than the one from which the current document originated.


Ajax /jquery Ajax
AJAX is the art of exchanging data with a server, and update parts of a web page.


JSON.stringify

Convert a JavaScript object into a string with JSON.stringify().



json parse

Parse the data with JSON.parse(), and the data becomes a JavaScript object.





Note

Let assume you were asked to parse json objects from an endpoint in angular 5 or React . React and angular 5 has HTTP client to parse and bind Json data .

Check the documentation