小程序怎么监听手机自带的返回按钮？

AI助手支持GPT4.0

小程序怎么监听手机自带的返回按钮？How does the applet monitor the back button of the phone?

Requirements: when you click the return button of the mobile phone (not the one in the upper left corner of the applet), you don't return. Take a custom method to see the applet document. Onunload or onhide can't prevent the return. Please give me your advice

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