我正试着用角度做一个简单的购物车。基本上我有项目列表,并希望用户输入数量,然后获取数量超过0的项目列表。
如果数量大于0,那么我会将它们添加到数组中,否则将其删除。
我必须做错事,这会妨碍我让数量正确。
它仅适用于第一次,但第二次不会更新。
我的控制器:
var extras1 = {Id:1,PackageName:"Balloons",Description:'Pack of 6',Cost:'$50.00',Qty:0}
var extras2 = {Id:2,PackageName:"Hot Chips",Description:'Fresh fried hot chips fully of yummy fat and cholesterol.',Cost:'$10.00',Qty:0}
var extras3 = {Id:3,PackageName:"Sausages",Description:'Hot sausages from premium offcuts',Cost:'$10.00',Qty:0}
$scope.extras =[extras1,extras2,extras3];
$scope.extraSelected = function(){
$scope.selectedExtra =[];
angular.forEach($scope.extras, function(extra)
{
if(extra.Qty > 0 )
{
console.log('Extra added');
$scope.selectedExtra.push(extra);
}
})
console.log($scope.selectedExtra);
}
加价:
<div ng-repeat="extra in extras" class="text-left">
<div class="row-centered">
<div class="row form-group">
<label class="col-md-1 col-sm-offset-1 step1-question" >{{$index + 1}}</label>
<div class="col-md-8">
<span class="h4 step1-answer"> {{ extra.PackageName}} </span>
<br/>
<span class="h5"> {{ extra.Description}} </span>
<br/>
<span class="h5"> {{ extra.Cost}} </span>
</div>
<div class="col-md-1">
<input type='text' class="form-control step1-answer text-center "
ng-model="extra.Qty"
placeholder="0" style="background-color:#ffffff;padding: 5px;height: 45px;"
ng-change="extraSelected(extra)"
/>
</div>
</div>
<hr/>
</div>
</div>
答案 0 :(得分:1)
也许是这样的东西?
<input type="number" ng-model="extra.Qty" ng-change="extraSelected()">
$scope.extraSelected = function () {
$scope.selectedExtra = [];
angular.forEach($scope.extras, function(extra) {
if(extra.Qty > 0) {
console.log('Extra added');
$scope.selectedExtra.push(extra);
}
})
console.log($scope.selectedExtra);
}
答案 1 :(得分:0)
$scope.extraSelected = function(extra){
$scope.selectedExtra =[];
angular.forEach($scope.extras, function(extra)
你有额外的定义作为传入的参数,也作为forEach函数的参数 - forEach循环遍历数组,Qty为0,所以它总是为零。
更改其中一个功能参数,使其不会破坏另一个。
功能范围的教训......