Can HTML Text Input Fields Grow Automatically Without JavaScript?

How to Make HTML Text Input Fields Automatically Grow as You Type

Problem:

Users often require text input fields that can adapt to the length of text they enter. While you can set an initial size CSS, it would be ideal to have the field grow automatically, expanding up to a maximum width. Determining if this capability is achievable in HTML and CSS, preferably without JavaScript, is essential.

Solution:

Surprisingly, it is possible to create a growing text input field using only CSS and the contenteditable attribute:

CSS:

<code class="css">span {
    border: solid 1px black;
}

div {
    max-width: 200px;
}</code>

HTML:

<code class="html"><div>
    <span contenteditable="true">sdfsd</span>
</div></code>

Explanation:

The contenteditable attribute allows users to edit the text within the span element. The max-width property on the div element ensures the field doesn't exceed a specified width (200px in this example). As the user types, the span element automatically grows to accommodate the added text, up to the maximum width.

Note on Contenteditable:

It's essential to remember that using contenteditable allows users to paste HTML elements into the field. Consider this when deciding whether to use this approach.

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