Select values between 2 values set with moment.js - momentjs

Question

I'm working with moment.js in Angular 5.
I have and array like this:
public lineChartLabels: Array<any> = [ "2018/26/02 10:01:00", "2018/26/02 10:02:00", "2018/26/02 10:03:00", "2018/26/02 10:04:00", "2018/26/02 10:05:00", "2018/26/02 10:06:00", "2018/26/02 10:07:00", "2018/26/02 10:08:00", "2018/26/02 10:09:00", "2018/26/02 10:10:00", "2018/26/02 10:11:00", "2018/26/02 10:12:00","2018/26/02 10:13:00", "2018/26/02 10:14:00", "2018/26/02 10:15:00" ];
and I have timeStart; and timeEnd;. I report only first, I initialize both in the same way
let timeStart = moment();
timeStart.format('YYYY/MM/DD HH:mm:ss');
timeStart.year(2018);
timeStart.month(2);
timeStart.date(26);
timeStart.hour(10);
timeStart.minute(10);
timeStart.second(0);
for timeEnd I use timeStart.hour(10); timeStart.minute(13);
Now I have to implement this cycle:
for( let i = 0; i < this.lineChartLabels.length; i++ ){
if (moment(this.lineChartsLabels[i]).isBetween(timeStart, timeEnd) ) {
console.log ( 'true' );
}
else {
console.log ( 'false' );
}
}
but it doesn't work.
Do you know how can I resolve?

Answer 1

There are 2 issues with your code:
Since lineChartLabels values are not in format recognized by moment(String), (ISO 8601 or RFC 2822), so you have to use moment(String, String) passing format as second parameter ('YYYY/DD/MM HH:mm:ss' in your case)
JavaScript months are 0 indexed, so month():
Gets or sets the month.
Accepts numbers from 0 to 11. If the range is exceeded, it will bubble up to the year.
Your timeStart and timeEnd represent the 26th of March
Here a live sample:
const lineChartLabels = [ "2018/26/02 10:01:00", "2018/26/02 10:02:00", "2018/26/02 10:03:00", "2018/26/02 10:04:00", "2018/26/02 10:05:00", "2018/26/02 10:06:00", "2018/26/02 10:07:00", "2018/26/02 10:08:00", "2018/26/02 10:09:00", "2018/26/02 10:10:00", "2018/26/02 10:11:00", "2018/26/02 10:12:00","2018/26/02 10:13:00", "2018/26/02 10:14:00", "2018/26/02 10:15:00" ];
let timeStart = moment();
timeStart.year(2018);
timeStart.month(2-1); // Months are 0 index, 2 stands for March
timeStart.date(26);
timeStart.hour(10);
timeStart.minute(10);
timeStart.second(0);
let timeEnd = moment(timeStart).hour(10).minute(13);
console.log(timeStart.format());
console.log(timeEnd.format());
for( let i = 0; i < lineChartLabels.length; i++ ){
if (moment(lineChartLabels[i], 'YYYY/DD/MM HH:mm:ss').isBetween(timeStart, timeEnd) ) {
console.log ( 'true' );
}
else {
console.log ( 'false' );
}
}
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