JSFiddle - React, Tailwind, and code Playground

HTML

<input id="one" type="date">
  	<input id="two" type="time">
	<button id="add">Добавить</button>

JavaScript

var notes = [];
	var add = document.getElementById("add");
	add.onclick = consider;
	function consider(){
		var elementone = document.getElementById('one');
		var elementtwo = document.getElementById('two');
		var attr = elementone.getAttribute("value");
		console.log(attr);
	}