JSFiddle - React, Tailwind, and code Playground
JavaScript
var products = [{
id: 1,
name: "Product One"},
{
id: 2,
name: "Product Two"},
{
id: 5,
name: "Another Product"}
];
var productIds = products.map(function(product) {
return product.id
}).toString();
//out
document.write(productIds);