PureJavaScript: forEach Selector

by Farzad Cyrus

HTML

<section class="class-1">Section 1</section>
<section class="class-2">Section 2</section>
<section class="class-3">Section 3</section>

CSS

html, body {
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-family: sans-serif;
}

section {
  height: 80px;
  width: auto;
  background: #48e;
  color: #fff;
  margin: 16px;
  line-height: 80px;
  border-radius: 2px;
  text-align: center;
  display: block;
}

JavaScript

var selector = document.querySelectorAll('section');
Array.prototype.forEach.call(selector, function(el, i) {
  el.addEventListener('click', function() {
  	alert('You clicked on ' + this.attributes.class.value);
  });
});