javascript textarea autosize

JavaScript Textarea Autosize

Have you ever filled out a form and noticed that the textarea box does not expand automatically as you type in more text? This can be frustrating for users as they have to manually scroll through the text, making it difficult to read.

The Solution:

One solution is to use JavaScript to create an autosize effect for the textarea box. Here's how to do it:

  1. First, create a textarea element in HTML:
<textarea id="text-area"></textarea>
  1. Next, add the following CSS to your stylesheet:
textarea {
    overflow: hidden;
    resize: none;
  1. Finally, add the following JavaScript code:
const textArea = document.getElementById('text-area');
textArea.addEventListener('input', () => { = 'auto'; = textArea.scrollHeight + 'px';

The JavaScript code basically listens to any input event on the textarea element and adjusts its height accordingly.

Alternative Methods:

There are several libraries available that can help achieve the same autosize effect. Some popular ones include:

Using a library can save you time and effort, but it's always good to understand how things work under the hood.

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