​x
 
1
<!DOCTYPE html>
2
<title>My Example</title>
3
​
4
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
5
<script>
6
  $( function() {
7
    $( "button" ).click( function() {
8
      $( "#animation" ).animate({
9
        fontSize: "3em",
10
        letterSpacing: "0.3em"
11
      }, 1000 );  
12
    });
13
  });
14
</script>
15
​
16
<button>Run Animation!</button>
17
​
18
<div id="animation">Animation</div>