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Home > Backend Development > PHP Tutorial > javascript - How to determine whether the other party has read the message in webapp social development? Or determine when the user leaves the page

javascript - How to determine whether the other party has read the message in webapp social development? Or determine when the user leaves the page

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Release： 2016-08-20 09:04:01

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How to determine whether the other party has read the message when sending a message in webapp social development, or when the user leaves the page and marks the message as unread

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How to determine whether the other party has read the message when sending a message in webapp social development, or to determine when the user leaves the page and marks the message as unread

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