vue监听不到数组变化

export default {
name:'Home',

  data () {

return {

NavSelect:'Home',

      Title:'收益总览',

      carNum:['冀']

}

},

  components:{

Button,

    Table,

    Page,

    DatePicker,

    CarNumkeyboard

},

  methods:{

CarNumClick(info){

if(this.carNum.length==1){

      this.$set(this.carNum,0,info);  //可以变化

        }else{

              this.carNum.push(info)//监听不到变化的

}

}

},

  mounted(){

}

}

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转载自blog.csdn.net/u011397539/article/details/82382751