正确使用闭包来捕获它

你可以使用闭包捕获正确的 this 。

new Vue({
  el:"#star-wars-people",
  data:{
    people: null
  },
  mounted: function(){
    // Before executing the web service call, save this to a local variable
    var self = this;
    $.getJSON("http://swapi.co/api/people/", function(data){
      // Inside this call back, because of the closure, self will
      // be accessible and refers to the Vue object.
      self.people = data.results;
    })
  }
})