JSFiddle - React, Tailwind, and code Playground

HTML

<div>
   <input id="schrijven-les1" type="text" />  
   <button id="controle-luisteren" onclick="schrijvenles1()">Check
 </button>
 </div>
 <div>
   <img id="goed-fout" height="320" width="320" />
 </div>

JavaScript

schrijvenles1 = function () {
var text = document.getElementById("schrijven-les1").value;
var imageElement = document.getElementById("goed-fout");
if (text=="Ik heet Marie." || text == "ik heet Marie." || text == "ik heet marie" || text == "Ik heet marie") {
	imageElement.src = "http://2.bp.blogspot.com/-tFd131QU9lY/Tt5uyxj9TPI/AAAAAAAAAtA/9A5fDrVb6Fw/s1600/1095399_66540032.jpg";
}
else
{
	imageElement.src = "http://1.bp.blogspot.com/-HRdV-Bbki7E/Tt5uh6fPcSI/AAAAAAAAAs4/-48SDCvmsgY/s1600/1095398_24641622.jpg";
}

return false;
};