javascript/hoverable_love_button at master · daffodils12/javascript · GitHub

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<!DOCTYPE html>
<html>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
var y=0;
function myFunction() {
	//alert("In function myFunction");
    var x = document.getElementById("gl1");
    x.style.color = "red";
}

function myFunction1() {
  //alert("y :"+y);
  if (y==0) {
	//alert("In function myFunction1");
    var x = document.getElementById("gl1");
    x.style.color = "black";
  }
}

function myFunction2() {
	//alert("In function myFunction2");
    var x = document.getElementById("gl1");
    x.style.color = "red";
    y=1;
}
</script>
<body>


<a href="#" onmouseover="myFunction()" onmouseleave="myFunction1()" onclick="myFunction2()"><i id="gl1" class="glyphicon glyphicon-heart" style="font-size:48px;color:black;"></i></a>


</body>
</html>