The unique aspect of their approach is that they are not just styling a plain text input, but rather utilizing it to trigger JavaScript that dynamically generates animated DOM elements. This level of creativity and customization goes beyond what can be achieved with CSS alone.
Upon closer inspection of the DOM after entering text, you will notice these newly generated elements alongside the text input:
<div>
<span>t</span>
<span>e</span>
<span>s</span>
<span>t</span>
<span>i</span>
<span>n</span>
<span>g</span>
<span> </span>
<span>1</span>
<span>2</span>
<span>3</span>
<b class="caret" style="height: 25px;"></b>
</div>
Through JavaScript manipulation, each character you type or delete results in the creation or removal of individual <span>
elements, with the animated blinking cursor represented by the <b class="caret">
element at the end.
By treating each character and the caret as separate elements, they are able to apply CSS transitions for animation effects such as size and opacity, showcasing the versatility and innovation in their design.