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Html How Can I Show Tooltip Only When Ellipsis Is Activated

Have you ever wanted to display a tooltip only when text gets truncated with an ellipsis in an HTML element? It can be a helpful feature for enhancing the user experience by providing additional information when the content overflows. In this article, we will explore a simple and effective way to achieve this using CSS and JavaScript.

To begin, let's understand the basic concept behind this functionality. When a text is too long to fit within a specified width, browsers automatically apply an ellipsis (...) to indicate that the content has been truncated. Our goal is to show a tooltip when this ellipsis is activated, giving users the option to view the full content.

First, let's create the HTML structure for our example. We will have a container element with a specific width and some text content that may overflow:

Html

<div class="text-container">
  Here is some long text that will get truncated with an ellipsis if it exceeds the container width.
</div>

Next, we need to style the text container using CSS to enable text truncation with an ellipsis:

Css

.text-container {
  width: 200px; /* Example width */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

Now comes the interesting part – showing the tooltip when the ellipsis is activated. We will use JavaScript to detect when the text overflows and display a tooltip accordingly. Here's a simple script to achieve this functionality:

Javascript

document.addEventListener('DOMContentLoaded', function() {
  const textContainer = document.querySelector('.text-container');

  if (textContainer.scrollWidth &gt; textContainer.clientWidth) {
    textContainer.addEventListener('mouseenter', function() {
      const tooltip = document.createElement('div');
      tooltip.className = 'tooltip';
      tooltip.textContent = textContainer.textContent;
      document.body.appendChild(tooltip);

      const rect = textContainer.getBoundingClientRect();
      tooltip.style.top = rect.top + 'px';
      tooltip.style.left = rect.left + 'px';
    });

    textContainer.addEventListener('mouseleave', function() {
      const tooltip = document.querySelector('.tooltip');
      if (tooltip) {
        tooltip.parentNode.removeChild(tooltip);
      }
    });
  }
});

In this script, we check if the scroll width of the text container is greater than its client width, indicating text overflow. If overflow is detected, we listen for the `mouseenter` event on the text container to create and display a tooltip with the full text content. When the user moves the cursor away (`mouseleave` event), the tooltip is removed.

You can further customize the tooltip styling and behavior to suit your project requirements. Remember to adjust the container width and other styles to fit your design.

By implementing this technique, you can enhance the user experience on your website by providing informative tooltips only when text is truncated with an ellipsis. Experiment with different styles and effects to make this feature even more engaging for your users.

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