Learning something new is scary. For me, the biggest issue with picking up a new skill is that I don’t know what I don’t know. Given that, it’s often useful to find a plan for learning whatever you’re interested in.
An expanding text area is a multi-line text input field that expands in height to fit its contents. This UI element is commonly found in both desktop and mobile applications, such as the SMS composition field on the iPhone. Examples can also be found on the web, including on Facebook, where it’s used extensively.