ryoakg
6/5/2016 - 1:14 PM

class-name-in-js.html

<html>
  <body>
    <div class="foo">Check developer tool's console!</div>
    <pre>console.log(document.getElementsByClassName('foo')[0].class);</pre>
    <p>じゃなくて</p>
    <pre>console.log(document.getElementsByClassName('foo')[0].className);</pre>
    <p>という話</p>
    <script>
     var e = document.getElementsByClassName('foo')[0]
     console.log(e.className);
     e.className = 'bar';
    </script>
  </body>
</html>