Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style> 
#myDIV {
    width: 500px;
    background-color: lightblue;
    overflow: auto;
}
</style>
</head>
<body>

<p>Click the "Try it" button to alert the max-height of the DIV element:</p>

<button onclick="myFunction()">Try it</button>

<div id="myDIV" style="max-height:100px;">
  <p>This DIV element does not have a pre-defined height.</p>

  <p>The height of this DIV element depends on its content.</p>

  <p>But the DIV element has a max-height, and will never exceed 100 pixels.</p>
</div>

<script>
function myFunction() {
    alert(document.getElementById("myDIV").style.maxHeight);
}
</script>

</body>
</html>