Question

我有一些依赖选择，我想重置所有下一个

<select ng-change="applyChanges(model.v2)"
            ng-model="model.v1" name="v1"
            ng-options="v as v.Name for v in vs" class="form-control" required></select>

<select ng-change="applyChanges(model.v3)" ng-model="model.v2"
            name="v2"
            ng-options="vv as vv.Name for vv in model.v1.v2" class="form-control"
            required ng-disabled="!model.v1"></select>

但是如何在ng-change方法中重置选择值？

$scope.applyChanges = function (arg) {
        if (!_.isUndefined(arg)) {
            arg = "?";
        }

    };

Answer 1

如果您说arg = '?'，则只更改本地变量arg的值，model.v2引用的值不会更改。

所以将model和要更改的属性作为参数传递给函数，如

<select ng-change="applyChanges(model, 'v2')"
            ng-model="model.v1" name="v1"
            ng-options="v as v.Name for v in vs" class="form-control" required></select>

然后

$scope.applyChanges = function (model, prop) {
        if (!_.isUndefined(model[prop])) {
            model[prop] = "?";
        }
};

重置select作为参数传递的值

1 个答案: