Please look at Mounting Position P&ID.

请看安装位置工艺流程图。

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Finding an element based on its ID, element type, or CSS class name is very useful, but what if you want to find an element based on its position in the DOM tree.

根据 ID、元素类型或 CSS 类名查找元素非常有用，但如何根据元素在 DOM 树中的位置执行查找呢？

youdao

The child process ID is shown in the third position and remains the same during a sequential restore.

子进程ID显示在第3个位置，在一次顺序恢复期间一直保持不变。

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