JSFiddle - React, Tailwind, and code Playground

JavaScript

;(function(){
	var keyName = 'my_counter'
  var emptyCounter = [{"id":1,"obj_id":234,"count":0}]
	var myObject = JSON.parse(localStorage.getItem(keyName)) || emptyCounter
	myObject[0].count++
	localStorage.setItem(keyName, JSON.stringify(myObject));
})()



console.log(localStorage.getItem('my_counter'))