/ Published in: ActionScript 3
I made one adjustment to the code because I was getting one scrolling extra line.
inputfield.textHeight > inputfield.height
to:
inputfield.textHeight >= inputfield.height
inputfield.textHeight > inputfield.height
to:
inputfield.textHeight >= inputfield.height
URL: http://blog.designreact.co.uk/2010/06/as3-limit-the-number-of-lines-in-an-input-textfield/