Vue's question about console (this.xx)

   


 as shown in figure 


  this  and  this.ws  both output normally, 
 but the problem is that in the output of  this , you don"t see  ws ? 
 what is the reason for this? Why doesn"t this  ws  be shown? Where does he exist 


 contact with JS is not in depth, so I can"t understand the situation. I hope I can give you some advice 
.
Console javascript vue.js
May.24,2022

js has its own member objects and properties inherited from the prototype chain. In this case, this.ws should be in prototype , that is, on the prototype chain, click prototype below to find it.

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