How To Set Font Size Based On Container Size Duplicate

Have you ever found yourself in a situation where you need to dynamically adjust the font size of a text element based on the size of its container? It's a common issue in web development, especially when you want your text to scale responsively with different screen sizes. In this article, we'll explore a simple and effective way to achieve this using HTML, CSS, and a sprinkle of JavaScript.

1. HTML Structure:
First, let's set up our HTML structure. Create a div element to serve as the container for your text. Give it a unique ID so we can target it later. Inside this div, add your text element, such as a paragraph or heading.

Here's a basic example:

<div id="text-container">
  <p id="dynamic-text">Your dynamic text here</p>
</div>

2. CSS Styling:
Next, let's apply some CSS to style our text container and text element. We will set the font size of the text element based on the width of the container.

#text-container {
  width: 100%; /* Set the width of the container */
}

#dynamic-text {
  font-size: 2em; /* Set a default font size */
  white-space: nowrap; /* Prevent text wrapping */
}

3. JavaScript Magic:
Now comes the fun part! We will use JavaScript to calculate the appropriate font size based on the container size.

function adjustFontSize() {
  const container = document.getElementById('text-container');
  const text = document.getElementById('dynamic-text');
  
  const containerWidth = container.offsetWidth;
  const textWidth = text.offsetWidth;
  
  const fontSize = (containerWidth / textWidth) * parseInt(getComputedStyle(text).fontSize);
  
  text.style.fontSize = fontSize + 'px';
}

// Call the function on page load and resize
window.addEventListener('load', adjustFontSize);
window.addEventListener('resize', adjustFontSize);

4. Final Touch:
Ensure your text container has a defined width or it inherits its width from a parent element. You can customize the initial font size and adjust the scaling factor in the JavaScript function based on your design requirements.

And that's it! You now have a dynamic font resizing mechanism based on the size of the container. Test it out by resizing your browser window, and watch the magic happen!

By following these steps, you can create flexible and responsive text elements that adapt seamlessly to different container sizes. This technique is handy for creating fluid layouts and improving the readability of your content across various devices.

Experiment with different font sizes, container widths, and text lengths to fine-tune the responsiveness of your design. Happy coding!