$setPristine() 不起作用. [英] $setPristine() not working.

问题描述

**** 注意我删掉了我的一些其他功能，以便可以更快地阅读代码.我无法清除表格.当我单击具有取消功能的按钮时.我以为我可以设置默认表单，但这没什么区别.

**** Note I cut out some of my other functions so that the code could be read through faster. I cannot clear the form. when i click the button with the cancel function. I thought I could set a default form, but this doesn't make a difference.

<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 我正在尝试使用带有 ng-click 的按钮命令将我的表单设置为 $setPristine.我认为设置默认表单会有所帮助，但提交时没有任何反应

Here is my javascript I am trying to set my form to $setPristine using the button command wiht ng-click. I though that setting a default form would help but nothing happens on submit

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');
        }

推荐答案

我认为你用错了.

$setPristine:

$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).此方法还将传播到此表单中包含的所有控件."

"This method can be called to remove the 'ng-dirty' class and set the form to its pristine state (ng-pristine class). This method will also propagate to all the controls contained in this form."

所以这只会清除类而不是 $scope 变量.您确实重置了 $scope.user 变量，可以说:

So this only clears classes but not the $scope variables. You do reset a $scope.user variable, could say:

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"

并在您的 JS 中替换它:

And replace this in your JS:

// $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');
}

为此:

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');
}

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