For example, the ID of a tag should be unique, and the value attribute of a tag should be bound to a piece of data in Page data view.

例如，标签的ID应该是独一无二的，而标签的值属性应该与Page data视图中的数据片段相联系。

youdao

While the changes aren't enormous, you can see that each value in the page now has a span setup, along with an ID tag.

虽然变化不大，但是可以看出页面中的每个值现在有了一个span设置，还有一个ID标记。

youdao

A page must call popup_header inside the head tag, then add a tag with the id value popup.

页面必须调用head标记中的popup_header，然后添加id值为popup的标记。

youdao