element into a styled textarea. Chrome, IE7+, FireFox, Opera, Safari #Resize #Textarea Expandify is a dead simple jQuery plugin that automatically resizes & expands textarea height to make the textarea grow as based on newlines in the user's input. How to check whether a checkbox is checked in jQuery? How to Dynamically Add/Remove Table Rows using jQuery ? insert. HTMLのtextareaタグにより、複数行のテキスト入力欄を作成できます。このページでは基本的な使い方から、入力欄の大きさを変更する方法、CSSでデザインを変える方法などまで分かりやすく解説します。 When you focus on the text area and delete from where the cursor puts itself, then leave the text area, the proper placeholder then appears. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.