JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

JavaScript

$(function () {
    var obj = [{'id': 0},{'id': 1},{'id': 2}];
    var output = '';
    for (property in obj) {
        property = parseInt(property)+1+",";
        output += property;           
    }
    alert(output);
    
});