报错: Method "watch" has type "object" in the component definition. Did you reference the function Method "watch" has type "object" in the component definition. Did you reference the function correctly?

　　原因: watch 是一个对象,应该以键值对的形式来使用,但是我 将 watch 放到了 methods: {} 中,导致了这个问题;

　　解决办法:  将watch 对象 拿出来,与 methods 平级;

附上当时的代码:

watch: {
  "$route.path":function(newval){
   if(newval === '/home'){
   this.flag = false
   }else{
   this.flag = true
   }
  }
  }
 }

总结