vuejs过滤器不是函数错误

Question

我有一个非常基本的数组：

specialityTest: [{person:'nurse', text:'text1'}, 
{person:'nurse', text:'text1'}, 
{person:'physician', text:'text1'}, 
{person:'physician', text:'text1'}]

我正在尝试使用基本的过滤器功能对此进行过滤：

      this.specialityTest.filter((person) => {
        return (person =="physician")
      })

然后复制过滤的数组：

  methods: {
   seedSpeciality(){
      this.nurseListSpeciality2 = JSON.parse(JSON.stringify(this.specialityTest.filter(
      (person) => {
        return (person =="physician")
      })))
  },
 }

这对我不起作用...我有错误：

Uncaught (in promise) TypeError: this.specialityTest.filter is not a function at VueComponent.seedSpeciality (AddOfferDialog.vue?f4fc:1771) at VueComponent.boundFn [as seedSpeciality]。

我在这里做错了什么？

编辑：我从api调用运行此功能：

  fetchSpecialityArray(){
    this.$http.get('http://127.0.0.1:8000/api/speciality')
      .then(response => response.json())
      .then(result => this.specialityTest = result).then(this.seedSpeciality.bind(this))
  },

Answer 1

对我来说它工作正常。

<div id="app">
  <button @click="filter">Filter</button>
</div>

new Vue({
  el: "#app",
  data: {
    specialityTest: [
      {person:'nurse', text:'text1'}, 
      {person:'nurse', text:'text1'}, 
      {person:'physician', text:'text1'}, 
      {person:'physician', text:'text1'}
    ]
  },
  methods: {
    filter() {
        let filtered = this.specialityTest.filter((el) => {
        return (el.person =="physician")
      })
      console.log(filtered)
    }
  }
})

您正在使用过滤器功能遍历对象数组，因此在每个循环中都会得到对象。因此，如果使用el.person ==“ physician”，它将很好地工作

看看我的jsfiddle