JSFiddle - React, Tailwind, and code Playground

JavaScript

var stores = ["A", "B", "C"];

function HasC() {
    $(stores).each(function (i, s){
        if(s=="C")
            return true;
    });
}

function HasB() {
    var b = false;
    $(stores).each(function (i, s){
        if(s=="B"){
            b=true;
            return b;
        }
    });
}

function HasA() {
    var a = false;
    $(stores).each(function (i, s){
        if(s=="A"){
            a = true;
            return false;
        }
    });
    return a;
}



var ihasA = HasA();
var ihasB = HasB();
var ihasC = HasC();

console.log(ihasA);
console.log(ihasB);
console.log(ihasC);