4.1 Routing jump

• First, what is routing ？

answer ： Routing refers to the route that network packets are sent to the destination address , If the route planning is reasonable , Then the data will go faster , The delay is lower , The online experience is better .

• What is? Named route ？

answer ： So-called “ Named route ”（Named Route） That is, routes with names , We can give the route a name first , Then you can go through The route name directly opens the new route , This brings a kind of intuition for route management 、 In a simple way .

• What is a route jump ？

answer ： be-all page We Fine Take a name As identifier , Store in In a watch . then direct according to Provided name Conduct Page jump operation . This process A little bit Be similar to Store the routing information in the routing table , then Conduct A -> B transmission . So we be called Routing jump .

wx.navigateTo ： Do not close the current page , then To jump .
wx.redirectTo： Close current page , Jump to the target page .

wx.reLaunch： close Including home page All pages of , then Jump to the target page .

<view class="mainContext">
  <image class="img" src="/ Head portrait .jpg"></image>
  <text class="textA">{
   {msg}}</text>
<!-- <view class="showText" catchtap="fatherText"> <text catchtap="childText">Hello World</text> </view>--> 

  <view class="showText" catchtap="navigateToLog">
    <text>Hello World</text>
  </view>

</view>

  navigateToLog(){
    
    wx.navigateTo({
    
      url: '/pages/log/log',
    })
  },

• Local configuration json priority than overall situation app.json high .
  
  Modify the Local configuration , On the spot Just To change the . So priority It's better than overall situation high .
  

4.2 Life cycle

Life cycle is a comparison Simply understand the concept .

then each Method function of life cycle , All are Be similar to Corresponding event .

onShow： Always want Over and over again Called , When one page To be displayed will call .

onHide： When hiding a page Will execute this .

onReady： initialization What? , Rendering What? When it's all over , Meeting perform This .

onUnload： uninstall One On the page , Will execute this .

onLoad： When loading , Will execute this .

stay onLoad Before Actually Yes, there is The rest of the Business Executes , But we can't see . We Also known as Initialization of applet operation ！