Sure, there are a few ways to disable the resizable property of a text area. Here are a few methods:

Using CSS

The simplest way to disable the resizing handles is to use CSS. You can add the following CSS rule to your HTML document:

CSS

textarea {
  resize: none;
}

This will prevent the user from resizing the textarea, and will also hide the resizing handles.

Using JavaScript

You can also disable the resizing handles using JavaScript. The following JavaScript code will disable the resizing handles for all textarea elements:

JavaScript

document.querySelectorAll('textarea').forEach(function(textarea) {
  textarea.style.resize = 'none';
});

Using the HTML element

You can also disable the resizing handles by setting the resize attribute of the textarea element to none. For example, the following HTML code will disable the resizing handles for a textarea element with the id my-textarea:

HTML

<textarea id="my-textarea" resize="none"></textarea>

Using a browser extension

There are also a number of browser extensions that can be used to disable the resizing handles. One such extension is called "Text Area Resizing Disabler". This extension can be found in the Chrome Web Store and the Firefox Add-ons Store.

To install the extension, simply click on the "Add to Chrome" or "Add to Firefox" button. Once the extension is installed, you will need to enable it. To do this, click on the three dots in the top right corner of the Chrome or Firefox window, and then select "Extensions". Find the "Text Area Resizing Disabler" extension, and then click on the "Enable" button.

Once the extension is enabled, the resizing handles will be disabled for all textarea elements in Chrome or Firefox.