澪月

<textarea cols="50" rows="5" id="textarea" onfocus="if(value=='请输入发送内容'){value=''}" onblur="if (value ==''){value='请输入发送内容'}"> 请输入发送内容</textarea>

定义div：<div id="people" style="border: groove; padding-top:1px;width: 58%;height: 253px;overflow-y:scroll;"></div> over-flow-y可以开启y轴滚动条 js代码：//循环在div中添加buttonfunction addButton(){ var people = $(