JSFiddle - React, Tailwind, and code Playground

by Gwyn Milcote

JavaScript

var imageList = [
   {value: 100},
   {value: 200},
   {value: 300},
   {value: 400},
   {value: 500}
];

var index = imageList.map(function (img) { return img.value; }).indexOf(200);

console.log(index);