Property or method “salename” is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property.
属性或方法“billno”不是在实例上定义的，而是在呈现期间引用的。通过初始化该属性，确保该属性是反应性的，无论是在data选项中，还是对于基于类的组件
原因：声明的是数组在使用v-model时用数组名点出属性 tbill.billno