Javascript 遍历多个ng模型
我有一组Javascript 遍历多个ng模型,javascript,angularjs,Javascript,Angularjs,我有一组ng model元素,希望将所有值相加并显示出来。我的电视机看起来像这样 <div ng-app> <div ng-controller="SumApp" > <input ng-model='val1' type='number' ng-change='calculate()' ng-init='val1=0'/> <input ng-model='val2' type='number' ng-change='calcula
ng model
元素,希望将所有值相加并显示出来。我的电视机看起来像这样
<div ng-app>
<div ng-controller="SumApp" >
<input ng-model='val1' type='number' ng-change='calculate()' ng-init='val1=0'/>
<input ng-model='val2' type='number' ng-change='calculate()' ng-init='val2=0'/>
<input ng-model='val3' type='number' ng-change='calculate()' ng-init='val3=0'/>
<input ng-model='val4' type='number' ng-change='calculate()' ng-init='val4=0'/>
<div>{{sum}}</div>
</div>
</div>
<script type="text/javascript">
function SumApp($scope) {
$scope.sum = 0;
$scope.calculate = function() {
$scope.sum = $scope.val1+$scope.val2+$scope.val3+$scope.val4
};
}
</script>
{{sum}}
我的控制器看起来像这样
<div ng-app>
<div ng-controller="SumApp" >
<input ng-model='val1' type='number' ng-change='calculate()' ng-init='val1=0'/>
<input ng-model='val2' type='number' ng-change='calculate()' ng-init='val2=0'/>
<input ng-model='val3' type='number' ng-change='calculate()' ng-init='val3=0'/>
<input ng-model='val4' type='number' ng-change='calculate()' ng-init='val4=0'/>
<div>{{sum}}</div>
</div>
</div>
<script type="text/javascript">
function SumApp($scope) {
$scope.sum = 0;
$scope.calculate = function() {
$scope.sum = $scope.val1+$scope.val2+$scope.val3+$scope.val4
};
}
</script>
函数SumApp($scope){
$scope.sum=0;
$scope.calculate=函数(){
$scope.sum=$scope.val1+$scope.val2+$scope.val3+$scope.val4
};
}
因此,像模型的html一样,它是动态生成的
问题是,是否有任何方法可以迭代一组元素ng model
,而无需在控制器定义本身中使用任何列表
?知道在任何时候输入的确切数量,您可以轻松地使用循环对其进行汇总:
$scope.sum = 0;
$scope.numInputs = 5;
$scope.calculate = function() {
var i;
$scope.sum = 0;
for(i = 0; i < $scope.numInputs; i++) {
$scope.sum += parseInt($scope['val' + i], 10);
}
};
$scope.sum=0;
$scope.numInputs=5;
$scope.calculate=函数(){
var i;
$scope.sum=0;
对于(i=0;i<$scope.numInputs;i++){
$scope.sum+=parseInt($scope['val'+i],10);
}
};
你知道有多少个吗?是的,我可以预测有多少个,那么为什么不为(i=0;i
?你能回答把它标记为有效吗