The other way is to read it from the value binding that corresponds to the temporary loop variable, which is defined in the component tag's var attribute.
另一种方法是从对应于临时循环变量的值绑定中读取该数据,该变量定义在组件标记的var属性中。
In this scenario, the component that deals with download USES the variable (defined by the var attribute) of the parent Datatable component.
在该场景中,处理下载的组件使用父数据表组件的变量(var属性定义的)。
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