JSFiddle - React, Tailwind, and code Playground

JavaScript

var data = "AndraPradesh;foo;foo;ArunachalPradesh;Assam;Bihar;Chhattisgarh;Goa;Gujarat;Haryana;HimachalPradesh;Jammuan&Kashmir;Jharkhand;Karnataka;Kerala;MadyaPradesh;Maharashtra;Manipur;Meghalaya;Mizoram;Nagala;Orissa;Punjab;Rajasthan;Sikkim;TamilNadu;Tripura;Uttaranchal;UttarPradesh;WestBengal".split(";");

var distinctjQuery= [];

$.each(data , function(i, el){
    if($.inArray(el, distinctjQuery) === -1) 
        distinctjQuery.push(el);
});

console.log(distinctjQuery);

var distinct = data.filter(function(elem, pos) {
    return data.indexOf(elem) == pos;
});

console.log(distinct);