JSFiddle - React, Tailwind, and code Playground

JavaScript

var str = '{"Users":\
[{"user_id":"1361453832p3y","name":"","username":"sideshow","password":"sideshow","user_type":"1","rest_id":"1361453832fxL","email":""},\
{"user_id":"1361523362ANq","name":"Sharon","username":"Sharon45","password":"Sharon45","user_type":"3","rest_id":"1361453832fxL","email":""},\
{"user_id":"1361523653SXp","name":"Heather F","username":"fishface","password":"golliwog","user_type":"3","rest_id":"1361453832fxL","email":""}]}';

var json = $.parseJSON(str);

$.each(json,function(i,j){
    $(j).each(function(k,v){    
     console.log(v.user_id);
     console.log(v.username);        
    });
});