校验后

 resetForm(formName) {
        this.$refs[formName].resetFields();
 }

 watch: {
    drawerLog(newValue, oldValue) {
      console.log(newValue, oldValue, "drawerLog");
      if (newValue && (oldValue != undefined)) {
         this.resetForm('formLog');
      }
    },
  },

//  特定字段name 的验证清除
 this.$nextTick(() => {
      this.$refs[formName].clearValidate("name");
 });