Applet lifecycle

When the applet is registered , Loading page , Trigger onLoad Method , A page can only be called once .

2、 Trigger after page loading onShow Method , Display page , Called every time a page is opened .

3、 Show page for the first time , Will trigger onReady Method , Render page elements and styles , A page can only be called once .

4、 When the applet runs in the background or jumps to another page , Trigger onHide Method .

5、 When the applet has background access to the foreground to run or re-enter the page , Trigger onShow Method .

6、 When using the redirect method wx.redirectTo(OBJECT) Or close the current page to return to the previous page wx.navigateBack(), Trigger onUnload

wx.navigateTo Jump state , page A And page B Life cycle logic of

1、 Get into A page ：A perform onLoad()–>onShow()–>onReady();

2、A page navigateTo B page ：A perform onHide(),B perform onLoad()–>onShow()–>onReady();

3、B Page back A page ：B perform onUnload(),A perform onShow();

4、 sign out A page ：A perform onUnload().