JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.0.0.min.js"></script>
<button class="update-1">Перезаписать data1</button>
<button class="update-2">Перезаписать data2</button>

CSS

button {
  cursor: pointer;
}

JavaScript

function getTimeFunc() {
				var actualTime = new Date();
			
				if(actualTime.getSeconds() < 10) {
					var seconds = '0' + actualTime.getSeconds();
				} else {
					var seconds = actualTime.getSeconds();
				}
				
				if(actualTime.getMinutes() < 10) {
					var minutes = '0' + actualTime.getMinutes();
				} else {
					var minutes = actualTime.getMinutes();
				}
				
				if(actualTime.getHours() >= 10 && actualTime.getHours() <= 23) {
					var hours = actualTime.getHours();
				} else {
					var hours = '0' + actualTime.getHours();
				}
			
				if(actualTime.getDate() < 10) {
					var currentDate = '0' + actualTime.getDate();
				} else {
					var currentDate = actualTime.getDate();
				}
				if(actualTime.getMonth() + 1 < 10) {
					var currenMonth = '0' + (actualTime.getMonth() + 1);
				} else {
					var currenMonth = actualTime.getMonth() + 1;
				}
				
				var currentYear = actualTime.getFullYear();
				var currentTime = hours + ':' + minutes + ':' + seconds;
				
				return {
					time: currentTime+', '+ currentDate + '.' + currenMonth + '.' + currentYear
				}
			}
			
			function writeLS1() {
				var time = getTimeFunc().time;
				
				localStorage.someData1 = 123 + '; time ' + time;
			}
			
			function writeLS2() {
				var time = getTimeFunc().time;
				
				localStorage.someData2 = 123 + '; time ' + time;
			}
			writeLS2();
			
			function getLSdata() {
				var data1 = localStorage.someData1;
				var data2 = localStorage.someData2;
				var position1 = data1.indexOf('time');
				var position2 = data2.indexOf('time');
				var time1 = data1.substring(position1+5, 30);
				var time2 = data2.substring(position2+5, 30);
				
				var hours1 = parseInt(time1.substring(0,2));
				var minutes1 = parseInt(time1.substring(3,5));
				var seconds1 = parseInt(time1.substring(6,8));
				var date1 = parseInt(time1.substring(10,12));
				var month1 = parseInt(time1.substring(13,15));
				var year1 = parseInt(time1.substring(16,20));
				
				var hours2 =...