code: function(name) {
        if (typeOf(name) === "array") {
          for (var i = name.length; i--;) {
            this.off(name[i]);
          }
        } else {
          if (this._rules[name]) {
            delete this._rules[name];
          }
        }
        return this;
      }
docs: ###__删除规则__ : 删除对应规则, 即nes的规则都是在运行时可删可增的