vue监听多个变量的方法

data() {
    return {   
      switchParam: {
        a: false,
        b: false,
        c: false
      }
    }
}

watch: {  
    switchParam: {
      deep: true,
      handler(newVal) {
        let dom = document.querySelector(‘.vis-panels-controler‘);
        if (newVal.a || newVal.b || newVal.c) {
          dom.style.zIndex = 180;
        } else {
          dom.style.zIndex = 120;
        }
      }
    },
}

data() {
    return {
      a: false, // 自主分析
      b: false,
      c: false
    }
  },
  computed: {   
   allPanelShow() {
    this.a;
    this.b;
    this.c;
　　return Date.now()
    }
  },
  watch: {
   allPanelShow() {
     let dom = document.querySelector(‘.vis-panels-controler‘);
    if (this.a || this.b || this.c) {
      dom.style.zIndex = 180;
    } else {
       dom.style.zIndex = 120;
    }
  },
}