Javascript 如何使用firebase云函数增加徽章计数

现在我的有效载荷只发送1个徽章计数，徽章计数的值不会增加。即使收到多个通知，它仍保持为1

javascript应该如何编写

我当前的代码：

const functions = require('firebase-functions');                   
const admin = require('firebase-admin'); 
admin.initializeApp(functions.config().firebase);
exports.sendPushForHelp = 
functions.database.ref('/help/school/{id}').onWrite(event => {
   const payLoad = {
     notification: {
         title: 'Someone',
         body: 'needs help',
         badge: '1',
         sound: 'Intruder.mp3'
     }
   };
   return admin.database().ref('fcmToken').once('value').then(allToken => {
       if (allToken.val()) {
        const token = Object.keys(allToken.val());
        return admin.messaging().sendToDevice(token, payLoad).then(response => {

            });
        };
    });
});

---

您可以在JS中存储一个

badgeCount

，并在每次调用时增加它，或者随机化它，或者做其他事情

即：

---

难道你不能只做一个增量int，然后将const有效载荷中的

badge

值设置为该值吗？你的意思是我应该在xcode（swiftcode）中包含增量int。然后我应该在有效载荷中使用这个变量。比方说badge:badgecount？这可能行得通，我甚至建议将var存储在JSF中，你能给我举个例子吗？我对JS很陌生。你应该在哪里声明变量？当然，我会在答案中快速写下来

const functions = require('firebase-functions');                   
const admin = require('firebase-admin'); 
admin.initializeApp(functions.config().firebase);
var badgeCount = 1;
exports.sendPushForHelp = 
functions.database.ref('/help/school/{id}').onWrite(event => {
   const payLoad = {
     notification: {
         title: 'Someone',
         body: 'needs help',
         badge: badgeCount.toString(),
         sound: 'Intruder.mp3'
     }
   };
   badgeCount++; //or whatever
   return admin.database().ref('fcmToken').once('value').then(allToken => {
       if (allToken.val()) {
        const token = Object.keys(allToken.val());
        return admin.messaging().sendToDevice(token, payLoad).then(response => {
          //here might be a good place to increment as well, only on success
            });
        };
    });
});