Javascript 条件为真时如何增加变量
如果条件为真,我希望增加变量 我有一个对象,它有如下信息Javascript 条件为真时如何增加变量,javascript,arrays,angularjs,object,Javascript,Arrays,Angularjs,Object,如果条件为真,我希望增加变量 我有一个对象,它有如下信息 {id: 1, payment: pending} {id: 2, payment: paid} 以下是我迄今为止所做的工作: var currentIndex = 0; $scope.unpaid = 0; $scope.paid = 0; const getSessions = () => { loginService.getUser().then((response) => { var
{id: 1, payment: pending}
{id: 2, payment: paid}
以下是我迄今为止所做的工作:
var currentIndex = 0;
$scope.unpaid = 0;
$scope.paid = 0;
const getSessions = () => {
loginService.getUser().then((response) => {
var user_id = response.data.id;
console.log("getUser returning this => ", response.data);
loginService.getUserSessions(user_id).then((response) => {
var sessions = response.data;
console.log(sessions);
sessions.forEach(e => e.next_class = e.next_class.substring(0, 10));
sessions.forEach(function (arrayItem) {
if(arrayItem.payment === "Pending") {
$scope.unpaid++;
}else{
$scope.paid++;
};
});
$scope.new = sessions;
Date($scope.class).toISOString().slice(0,10);
})
})
};
getSessions();
我可以为每个使用循环对象,但我想循环对象并检查支付
键。如果付款==待定
存储在未付款
,如果付款==已付款
则存储在已付款
前端将显示有多少未付费会话和付费会话以数字形式显示,例如:
Unpaid 1
Paid 1
我假设对象在一个数组中,我也会假设它被称为支付
:
var paid = 0;
var unpaid = 0;
var payments = [{id: 1, payment: 'paid'}, {id: 2, payment: 'unpaid'}, {id: 3, payment: 'unpaid'}];
for (var payment in payments) { // iterate through all payments
if (payments[payment].payment == 'paid') { // if the person has paid
paid++; // count a payment
} else { // if the person hasn't paid
unpaid++; // count a non-payment
}
}
console.log("Paid: " + paid + ", Unpaid: " + unpaid);
此外,您可能应该将付款
设置为布尔值,并将其称为已付款
,其中true表示此人已付款,false表示未付款。
如果这样做,则可以将If条件更改为If(payments[payment].payment){…}
。好多了 编辑我的示例,您可以运行该示例,并让我知道它是否有意义!所以它确实有效,但出于某种原因,当我删除会话时,它仍然会增加未付变量。如果删除会话并希望更新付费和未付费变量,则需要将其重置为0,然后再次运行相同的过程。此代码不会自行更新。