1. :style 同时绑定对象与属性
:style="[{color: this.color}, this.layout == 'left'? 'style1':'style2']"
2. 字符串拼接
:id="['style'+index]"
:action="path+'executeSQLscript3'"
3. 绑定数值 与字符串数值 true则加载,false则忽略
:class="{red: changeRed==n ,['layout'+layout]:true}"