The function of AIO is to perform disk I/O when SQL statement accessing or updating database data.

AIO 的功能是在 SQL 语句访问或更新数据库数据时，执行磁盘 I/O。

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The onclick handler function named addToCart is responsible for updating the state of the cart through an Ajax call (see Listing 1).

名为addtocart的onclick处理函数负责通过Ajax调用来更新购物车的状态(请参阅清单1)。

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For the function in Listing 2, extract the data property of the event, as this is the actual data sent by the thread, and pass it to another function for updating the UI.

对于清单2中的这个函数，提取event的data属性，因为这是被线程发送的实际数据，然后将它发送给另一个函数来更新ui。

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