In Vue, loop an array, do not display the problem, get a fake data, it will loop out instead? Why

Core: On the issue of this point, it is best to print out this to see

You can render that array on the page.

<div>{{listData}}</div>
You'll see something magical, even time and space.
Solution:

GetList () {
    Let _this=this
    Let params={
      Currentpage:_this.currentpage,
      Pagesize:_this.pagesize,
    }
  _this.ajax ({
    Type: "Post",
    Data:params,
    URL: "/author/fans/fanstimelist",
    Success (RES) {
      _this.listdata=res.responsebody.data
      Console.log (_this.listdata, ' data printing ')
      Console.log (_this, ' data printing ')
    }

The best solution when using the arrow function. has been changed to an arrow function

　

GetList () {
    Let params={
      CurrentPage:this.currentPage,
      PageSize:this.pageSize,
    }
  This.ajax ({
    Type: "Post",
    Data:params,
    URL: "/author/fans/fanstimelist",
    Success: (res) + = {
      This.listdata=res.responsebody.data
      Console.log (this.listdata, ' data printing ')
      Console.log (this, ' Data printing ')
    }
  });
},

In Vue, loop an array, do not display the problem, get a fake data, it will loop out instead? Why