JSFiddle - React, Tailwind, and code Playground

JavaScript

var set1 = {desc:"111",url:"http://photo1.com"};
var set2 = {desc:"222",url:"http://photo2.com"};
var set3 = {desc:"333",url:"http://photo3.com"};
var set4 = {desc:"444",url:"http://photo4.com"};

function make_set(set,desc,url) {
     set.desc = url;
     set.url = url;
    return set;
}

for (var i = 1; i < 5; i++) {
    tempSet = eval("set"+i);
    tempSet = make_set(tempSet,"new description","new url");
    console.log(tempSet)
};

console.log(set1);
console.log(set2);
console.log(set3);
console.log(set4);