[Reference url]Javascript非同期promise

Javascript非同期promise

非同期やるならPromiseでらくらく。（現代的JavaScriptおれおれアドベントカレンダー2017 – 10日目）

// 1. `new Promise()` して新しい `Promise` オブジェクトを作成
const p = new Promise((resolve, reject) => {
  // 3. 非同期処理実行
  setTimeout(() => {
    // 4. 完了時に `resolve()` を実行
    const result = 123;
    resolve(result);
  }, 1000);
});
 
// 2. `Promise` オブジェクトに `then()` でコールバックを登録
p.then((result) => {
  // 5. `resolve()` に与えた情報を伴ってコールバック実行
  console.log(result)
});

[Reference url]Javascript Remoting で Async/Await 例

Javascript Remoting で Async/Await 例

https://qiita.com/hrk623/items/30b89575c1478eeced37

<apex:page controller="AsyncAwaitSampleController">
    <script>
    (async () => {
      let accountList = await getAccountList().catch(err => {console.error(err.message); });
      if (accountList) { // エラー時は undefined となるので注意
        console.log(accountList);
      }
    })();

    const REMOTEACTION_OPTIONS = {buffer: true, escape: true, timeout: 120000};
    function getAccountList() {
      return new Promise((resolve, reject) => {
        Visualforce.remoting.Manager.invokeAction('{!$RemoteAction.AsyncAwaitSampleController.getAccountList}',
          (result, event) => {
            if (event.status) resolve(result);
            else reject(event);
        }, this.REMOTEACTION_OPTIONS); // アロー関数を使う場合は this を忘れずに
      });
    }
    </script>
</apex:page>
public class AsyncAwaitSampleController {
    @RemoteAction
    public static List<Account> getAccountList() {
        return [SELECT Id, Name FROM Account];
    }
}

[Javascript]Javasriptでtomorrow取得

Javasriptでtomorrow取得

            const today = new Date();
            
            const tomorrow = new Date(today);
            tomorrow.setDate(tomorrow.getDate() + 1);

            const yyyyTomorrow = tomorrow.getFullYear();
            let mmTomorrow = tomorrow.getMonth() + 1;
            let ddTomorrow = tomorrow.getDate();
            const yyyymmddTomorrow = yyyyTomorrow + "," + mmTomorrow + "," + ddTomorrow;
            console.log('yyyymmddTomorrow:'+yyyymmddTomorrow);

            var endDate = new Date(yyyymmddTomorrow);
            console.log('endDate:'+endDate);

[Firebase]クエリでendAt使用例

クエリでendAt使用例

            const today = new Date();
            const yyyy = today.getFullYear();
            let mm = today.getMonth() + 1;
            let dd = today.getDate();
            const yyyymmdd = yyyy + "," + mm + "," + dd;
            var startDate = new Date(yyyymmdd);

            const tomorrow = new Date(today);
            tomorrow.setDate(tomorrow.getDate() + 1);

            const yyyyTomorrow = tomorrow.getFullYear();
            let mmTomorrow = tomorrow.getMonth() + 1;
            let ddTomorrow = tomorrow.getDate();
            const yyyymmddTomorrow = yyyyTomorrow + "," + mmTomorrow + "," + ddTomorrow;
            console.log('yyyymmddTomorrow:'+yyyymmddTomorrow);

            var endDate = new Date(yyyymmddTomorrow);
            console.log('endDate:'+endDate);
            
            firebase.firestore()
            .collectionGroup("samplecollection") 
            .orderBy("createdAt", "asc").startAt(startDate).endAt(endDate)
            .limit(10)
            .get()
            .then(querySnapshot => {
                querySnapshot.forEach(doc => {
                    console.log('success');
                }, (error) => {
                    console.log('error');
                });
            })