15 Minuten Intervall zwischen zwei Daten Javascript

Question

Problem: Ich muss ein Array aller 15-Minuten-Zeitfenster zwischen zwei Datum/Uhrzeit-Stempeln (Datumsformat: 2016-08-10 16:00:00) in ein HH erstellen: mm Format, wobei die Minuten auf 00,15,30,45 beschränkt sind.

Beispiel: 12:30 PM zu 2:30 PM wäre> 12: 30,12: 45,13: 00,13: 15,13: 30,13: 45,14: 00,14: 15

Der folgende Code funktionierte, aber er berücksichtigte nicht den Startzeitschlitz (er begann immer bei '00'). Der Code wurde angepasst, um es zu berücksichtigen, aber jetzt wird die Stunde nicht korrekt erhöht.

function generateTimeSlots(s,e) 
{ // create an array of timeslots (15 min interval) between 2 dates 

var ckTimes = new Array(); 
var timeSlots = new Array(); 
var diff = Math.abs((new Date(e)) - (new Date(s))); 
var duration = Math.floor((diff/1000)/60); 
var sHour = (((s.split(' ')[1]).split(':'))[0]) * 1; 
var ampm = (s.split(' '))[2]; 

// convert hour to 24 hour 
if(ampm+'' == 'PM' ${AND} sHour != 12) 
{ 
    sHour = sHour + 12; 
} 

var hours = (duration/60); 
var slots = (hours * 4); // total 15 min slots 

var chunk = ['00','15','30','45'] // the four 15 min slots in a hour 

// Attempt to move starting position to the correct 15 min block 
// Beforehand, it would always start at the '00' slot 
// i.e. 12:30 pm to 1:30pm would return 12:00,12:15,12:30,12:45 
var i = ""; 
var startMin = (((s.split(' ')[1]).split(':'))[1]) 
// note platform doesn't support indexOf 
for (var z = 0; 4 > z; z++){ 
    if (chunk[z].toString() == startMin.toString()) 
     i = z; 
} 

slots += i; 

for(i;slots > i;i++) 
{ 
    var quarter = (i % 4); 
    var sMin = chunk[quarter]; 
    var slot = sHour+":"+sMin; 
    if(ampm+'' == 'AM' ${AND} 10 > sHour) 
    { 
     slot = "0"+slot; 
    } 
    timeSlots.push(slot) 

    if(hours > 1) 
    { 
     if(quarter == 3) 
     { 
      sHour++; 
     } 
    } 
} 

return timeSlots; 
} 

Answer 1

Darf ich vorschlagen moment.js? Es macht Aufgaben wie diese viel einfacher:

function intervals(startString, endString) { 
    var start = moment(startString, 'YYYY-MM-DD hh:mm a'); 
    var end = moment(endString, 'YYYY-MM-DD hh:mm a'); 

    // round starting minutes up to nearest 15 (12 --> 15, 17 --> 30) 
    // note that 59 will round up to 60, and moment.js handles that correctly 
    start.minutes(Math.ceil(start.minutes()/15) * 15); 

    var result = []; 

    var current = moment(start); 

    while (current <= end) { 
     result.push(current.format('YYYY-MM-DD HH:mm')); 
     current.add(15, 'minutes'); 
    } 

    return result; 
} 

console.log(intervals('2016-08-10 4:35:00 PM', '2016-08-10 8:06:00 PM')); 

// Output: 
// [ '2016-08-10 16:45', 
// '2016-08-10 17:00', 
// '2016-08-10 17:15', 
// '2016-08-10 17:30', 
// '2016-08-10 17:45', 
// '2016-08-10 18:00', 
// '2016-08-10 18:15', 
// '2016-08-10 18:30', 
// '2016-08-10 18:45', 
// '2016-08-10 19:00', 
// '2016-08-10 19:15', 
// '2016-08-10 19:30', 
// '2016-08-10 19:45', 
// '2016-08-10 20:00' ] 

Answer 2

Eine JS-Version.

https://jsfiddle.net/justindevs/wgk63o1y/

//Input 
var startTime = "2016-08-10 02:30:00" 
var endTime = "2016-08-10 04:45:00" 

//Parse In 
var parseIn = function(date_time){ 
    var d = new Date(); 
    d.setHours(date_time.substring(11,13)); 
    d.setMinutes(date_time.substring(14,16)); 

    return d; 
} 

//make list 
var getTimeIntervals = function (time1, time2) { 
    var arr = []; 
    while(time1 < time2){ 
    arr.push(time1.toTimeString().substring(0,5)); 
    time1.setMinutes(time1.getMinutes() + 15); 
    } 
    return arr; 
} 

startTime = parseIn(startTime); 
endTime = parseIn(endTime); 

var intervals = getTimeIntervals(startTime, endTime);