<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#test{
color:red;
}
</style>
</head>
<body>
<h2 id="test">Hello World!</h2>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var y = document.getElementById("test");
var z = window.getComputedStyle(y, null);
var txt = "";
for(i=0; i < z.length; i++){
cssProp = z.item(i)
txt += cssProp +" : "+ z.getPropertyValue(cssProp) +"<br>"
}
x.innerHTML = txt;
</script> </body>
</html>