[英]How to make javascript wait on the result of Google-apps-script?
我正在嘗試使用Google-apps-script顯示給定日期的所有事件,我的問題是javascript代碼在腳本完成之前仍在繼續,因此我的代碼混亂了。 我如何使其暫停直到腳本返回結果,還是有比當前更好的方法呢?
Javascript:
<script>
var currentDate = new Date();
currentDate = new Date(currentDate.getFullYear(), currentDate.getMonth(), currentDate.getDate());
currentDate = new Date(currentDate.getTime() - currentDate.getTimezoneOffset()*60*1000);
function formatDate(date){
//turns date into format "Month DD"
date = date.toISOString();
var months =["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
var output = months[date.slice(5,7)-1]+" "+date.slice(8,10);
return output;
}
function printEvents(day){
//retrieve events from google calendar for given day
google.script.run.withSuccessHandler(onSuccess).listUpcomingEvents(day.toISOString(), (new Date(day.getTime()+24*60*60*1000).toISOString()));
}
function printCalendar(date1){
//print events for three days starting with the given day
document.getElementById('calendar').innerHTML = formatDate(date1)+"<br />";
printEvents(date1);
document.getElementById('calendar').innerHTML += "<br />"+formatDate(new Date(date1.getTime()+24*60*60*1000))+"<br />";
printEvents(new Date(date1.getTime()+24*60*60*1000));
document.getElementById('calendar').innerHTML += "<br />"+formatDate(new Date(date1.getTime()+2*24*60*60*1000))+"<br />";
printEvents(new Date(date1.getTime()+2*24*60*60*1000));
}
function onSuccess(events){
if(events != undefined){
for (i=0; i<events.length; i++){
for (j=0; j<3; j++){
document.getElementById('calendar').innerHTML += events[i][j]+"<br />";
}
document.getElementById('calendar').innerHTML += "<br />";
}
}
}
printCalendar(currentDate);
</script>
Google腳本:
function listUpcomingEvents(dateMin, dateMax) {
var calendarId = 'primary';
var optionalArgs = {
timeMin: dateMin,
timeMax: dateMax,
showDeleted: false,
singleEvents: true,
maxResults: 1,
orderBy: 'startTime'
};
var response = Calendar.Events.list(calendarId, optionalArgs);
var events = response.items;
var calendar = []
if (events.length > 0) {
for (i = 0; i < events.length; i++) {
var event = events[i];
var when = event.start.dateTime;
var descr = event.description;
if (!when) {
when = event.start.date;
}
if (!descr) {
descr = "NaN"
}
calendar.push([event.summary, when, descr]);
}
return calendar;
}
}
function doGet() {
var output = HtmlService.createTemplateFromFile('calendar');
return output.evaluate().setXFrameOptionsMode(HtmlService.XFrameOptionsMode.ALLOWALL);
}
function include(filename) {
return HtmlService.createHtmlOutputFromFile(filename)
.getContent();
}
當前結果:
"date1"
"date2"
"date3"
"events1"
"events2"
"events3"
預期結果:
"date1"
"events1"
"date2"
"events2"
"date3"
"events3"
解決了見評論。
看起來像這里的承諾? stackoverflow.com/questions/14220321/…– Mark Schultheiss 28分鍾前
@MarkSchultheiss謝謝,對同步和異步的閱讀使我重寫了代碼,現在可以正常工作了。 我沒有使用諾言,而是使用.insertAdjacentHTML()並給出了日期和ID以將其插入正確的位置。 – SJ_WTF
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