How can I add text suffixes to `` elements for better user feedback?

Adding Text Suffixes to

In the realm of user interfaces, it's essential to provide clear and intuitive feedback to guide users. When dealing with numerical inputs, it becomes crucial to convey the units of measurement used. However, HTML's standard element lacks this functionality. This article delves into a solution to add text suffixes to numerical input fields.

Using a combination of HTML and CSS, we can create a custom wrapper element for each input. This wrapper will position the unit suffix as a pseudo element ::after. By utilizing absolute positioning, the pseudo element remains independent from the input field's layout, enabling flexible styling options.

Within the wrapper, the ::after pseudo element is situated at the top and right of the input field. It contains the desired unit abbreviation as its content. This approach caters to scenarios where the user input is relatively short, ensuring that the unit suffix remains legible next to the number.

To optimize UX, we can add some interactivity. Upon hovering or focusing on the input field, the unit suffix is nudged slightly to the left. This motion aims to accommodate the appearance of arrow buttons in certain browsers, ensuring that both the unit and arrows remain visible during user interactions.

Here is an example code snippet demonstrating the implementation:

/* CSS */
div {
  display: inline-block;
  position: relative;
}

div::after {
  position: absolute;
  top: 2px;
  right: .5em;
  transition: all .05s ease-in-out;
}

div:hover::after,
div:focus-within::after {
  right: 1.5em;
}

.ms::after {
  content: 'ms';
}

.db::after {
  content: 'db';
}

.percent::after {
  content: '%';
}

/* HTML */
<div class="ms">
  <input type="number" id="milliseconds" />
</div>

<hr />

<div class="db">
  <input type="number" id="decibel" />
</div>

<hr />

<div class="percent">
  <input type="number" id="percentages" />
</div>

With this technique, users can now intuitively distinguish between numerical values representing milliseconds, decibels, or percentages. By adding these subtle text suffixes, we enhance the overall usability and clarity of our numerical input fields, empowering users to provide accurate and meaningful data.

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