<input type="text" name="fname" id = "inputa" value="dzialajplz">
<button onclick="My2()">okokokokok</button><br>

	 <script type = "text/javascript">

	 var dane = document.getElementById("inputa").innerHTML;
	 var dane_2 = document.getElementById("inputa").value;

	 function My2() {
	 console.log("dane: " + dane);
	 console.log("dane_2: " +  dane_2);
	 }