The HTML <textarea> disabled attribute is widely supported across all major modern web browsers. This includes: Google Chrome, Mozilla Firefox, Microsoft Edge, Apple Safari, and Opera.

 

When the disabled attribute is present on a <textarea> element, it renders the text area unusable and un-clickable, preventing user interaction. The contents within a disabled <textarea> are typically displayed in a grayed-out or visually distinct manner by default, although the exact styling can be customized with CSS.

 

Learn disable HTML <textarea> Attribute