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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

              
                <h2>Using <code>addEventListener()</code> with an <code>options</code> Object as Third Parameter</h2>

<button>Trigger the Click Event</button>

<div class="output">[Click the Button]<br></div>

<p>The event listener for the button appends text to the DIV element above. Due to the <code>once: true</code> property of the <code>options</code> object, the text gets appended only once then the event listener is removed.<p>

              
            
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CSS

              
                body {
  padding: 0 16px;
  font-size: 1.2em;
  text-align: center;
}

.output {
  margin: 20px auto;
  border: 3px dashed #444;
  max-width: 800px;
  padding: 10px;
  line-height: 1.5;
}

p {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

code {
  white-space: nowrap;
  color: firebrick;
}
              
            
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JS

              
                let btn = document.querySelector('button'),
    op = document.querySelector('.output');

btn.addEventListener('click', function () {
  op.innerHTML += 'Button was clicked';
}, {
  capture: false,
  once: true,
  passive: false
});
              
            
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999px

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