$ setPristine()不起作用.

Question

****注意我删除了一些其他功能,以便更快地读取代码.我无法清除表格.当我点击带有取消功能的按钮时.我以为我可以设置默认表单,但这没有什么区别.

<form  name="myForm" novalidate ng-submit="submit()"> 
    <table class="mealCost"> 

        <!-- descriptions -->
        <tr> 
            <td> Base Meal Price: </td>
            <td><input type="number" name="price" ng-model="mealPrice" required></td>
        </tr>
        <!-- waiter puts in the info -->
        <tr> 
            <td> Tax Rate: % </td>
            <td><input type="number" step="0.01" name="tax" ng-model="mealTax" required></td>

        </tr>

        <tr> 
            <td> Tip Percentage: % </td>
            <td><input type="number"  name="tip" step="0.01" ng-model="tipPercent" required></td>

        </tr>

    </table>

    <p class="userResponse"> 
    <input type="submit" value="Submit"> 
    <!-- <input id="cancel" type="submit" value="Cancel" ng-submit="cancel(original)"> -->
    <button ng-click="cancel()">Start Over</button>
    </p>

</form>  

这是我的javascript我试图使用按钮命令将我的表单设置为$ setPristine并点击.我设置默认表单会有所帮助,但提交时没有任何反应

var app = angular.module('myApp',[]).
    controller('costController', function($scope) {
        // $scope.ready= false;
        $scope.mealPrice ="" ;
        $scope.mealTax = 0.05;
        $scope.tipPercent =0.05; 
        //  possibly could do 

        var defaultForm={
            price: "",
            tax: "",
            tip:""
        }

$scope.cancel = function() {
            $scope.myForm.$setPristine();
            $scope.user = angular.copy(defaultForm);
            console.log('empty');
        }

Answer 1

我觉得你错了.

$ setPristine:

"可以调用此方法来删除'ng-dirty'类并将表单设置为其原始状态(ng-pristine类).此方法也将传播到此表单中包含的所有控件."

所以这只清除了类而不是$ scope变量.你确实重置了$ scope.user变量,可以说:

添加用户.' 在Html中的每个模型前面

ng-model="user.tipPercent"
ng-model="user.mealTax"
ng-model="user.mealPrice"

并在你的JS中替换它:

// $scope.ready= false;
$scope.mealPrice ="" ;
$scope.mealTax = 0.05;
$scope.tipPercent =0.05; 
//  possibly could do 

var defaultForm={
    price: "",
    tax: "",
    tip:""
}

$scope.cancel = function() {
    $scope.myForm.$setPristine();
    $scope.user = angular.copy(defaultForm);
    console.log('empty');
}

对此:

var defaultForm = {
    mealPrice : "",
    mealTax : 0.05,
    tipPercent : 0.05
}

$scope.user = angular.copy(defaultForm);

$scope.cancel = function () {
    $scope.myForm.$setPristine();
    $scope.user = angular.copy(defaultForm);
    console.log('empty');
}