Call a class with a class in Javascript

This question already has an answer here:

How can I select an element with multiple classes in jQuery? 10 answers

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You have to connect them. The proper selector would be:

$('.about_us.aperto')

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如果你想选择一个具有多个类的元素，比如<div class="classA classB ClassC"></div>那么只需在JavaScript中加入它们即可，例如$('.classA.classB.classC').click(function() {...});

$('.about_us.aperto').click(function() {
  $(this).toggleClass('active');
});

.active {
  background: #0f0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="about_us aperto">
  <p>Lorem ipsum dolor sit amet</p>
</div>

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