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<html><body><h2>Use of The class Attribute in JavaScript</h2><p>Click the button to hide all elements with class name "city":</p><button onclick="myFunction()">Hide elements</button><h2 class="city">London</h2><p>London is the capital of England.</p><h2 class="city">Paris</h2><p>Paris is the capital of France.</p><h2 class="city">Tokyo</h2><p>Tokyo is the capital of Japan.</p><script>function myFunction() { var x = document.getElementsByClassName("city"); for (var i = 0; i < x.length; i++) { x[i].style.display = "none"; }}</script></body></html>