摘要：
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"head titleDrag and Drop/title meta http-equiv="Content-Type" content="text/html;charset=UTF-8" / style type="text 阅读全文
摘要：
textarea id="tValue" style="overflow-y:hidden; height:20px;" onpropertychange="this.style.height=this.scrollHeight + 'px'" oninput="this.style.height=this.scrollHeight + 'px'"/textarea 阅读全文