Questão 2295294

<!DOCTYPE html>

<html>

<head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1 /jquery.min.js"></script>

<script>

\$ ( document). ready(function(}{

\$("button").click(function(){

\$("h1, h2, p").addClass("blue");

\$("div").addClass("important");

});

});

</script>

<style>

.important {

font-weight: bold;

font-size: xx-large;

}

.blue {

color: orange;

}

</style>

</head>

<body>

<h1>Heading 1</h1>

<h2>Heading 2</h2>

<p> This is a paragraph. </p>

<p> This is another paragraph. </p>

<div>This is some important text!</div><br>

<button>Add classes to elements</button>

</body>

</html>