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<!DOCTYPE html>
<html>
<body>
​
<h1>My First JavaScript</h1>
​
<p id="demo">JavaScript can change the style of an HTML element.</p>
​
<script>
function myFunction() {
  document.getElementById("demo").style.fontSize = "25px"; 
  document.getElementById("demo").style.color = "red";
  document.getElementById("demo").style.backgroundColor = "yellow";        
}
</script>
​
<button type="button" onclick="myFunction()">Click Me!</button>
​
</body>
​
<!-- Mirrored from www.w3schools.com/html/tryit.asp?filename=tryhtml_script_styles by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:33:16 GMT -->
</html>
​
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