Scroll to the top of the page using JavaScript/jQuery. WordPress.com Create a free website. TextArea Overview. I crafted this book to be used as my own personal reference point for jQuery concepts. This is exactly the type of book I wish every JavaScript library had available. Found inside – Page 260For example, suppose when the visitor submits the form, you want to check to make sure all text fields hold some value. You need to select those text fields and then check each to see if each field holds a value. jQuery lets you ... User clicks edit and changes the text inside the textarea and opts to close without saving. It works fine…. jQuery: code to get TD text value on button click. It will return undefined if it is called on an empty set. Found inside – Page 12