Settimeout not working, what’s wrong?

Question

I need this window to open after 3 seconds, but I’m not getting by putting the setTimeout right on the button. What’s wrong? :

<script type="text/javascript">
function openWin() {
    var divText = document.getElementById("div-janela").outerHTML;
    var myWindow = window.open('', '',);
    var doc = myWindow.document;
    doc.open();
    doc.write(divText);
    doc.close();
}
</script>
<div id="div-janela">conteudo da div</div>
<input type="submit" onclick="setTimeout(openWin(), 3000)" value="abrir janela">

Answer 1

function openWin() {
    setTimeout(function(){
      var divText = document.getElementById("div-janela").textContent = "Abriu :D";
    }, 1000);
}

<div id="div-janela">conteudo da div</div>

<input type="submit" onclick="openWin()" value="abrir janela">

You could use IIFE, within the HTML tag

console.log("Ignore o erro");

<h1 onclick="(setTimeout(function(){alert('acho :D');}, 1000))()">Clique</h1>

The problem...

When the user clicks, it(onClick()) calls the openWind() immediately, what happens is that you cannot put openWin() within the setTimeout() you have to remove the parentheses, it would look something like this...

<div id="div-janela">conteudo da div</div>
<input type="submit" onclick="setTimeout(openWin, 3000)" value="abrir janela">

<script type="text/javascript">
function openWin() {
  var divText = document.getElementById("div-janela").outerHTML;
  var myWindow = window.open('', '',);
  var doc = myWindow.document;
  doc.open();
  doc.write(divText);
  doc.close();
}
</script>

Passing by openWin without the parentheses. The setTimeout() will receive what has to be done and only then will execute the function.

Answer 2

I changed and put the timeout inside the openWin function, and it worked normally.

<script type="text/javascript">
function openWin() {
    setTimeout(function(){
		var divText = document.getElementById("div-janela").outerHTML;
		var myWindow = window.open('', '',);
		var doc = myWindow.document;
		doc.open();
		doc.write(divText);
		doc.close();
	},3000);
    
}
</script>
<div id="div-janela">conteudo da div</div>
<input type="submit" onclick="openWin()" value="abrir janela">