I have the time value in HH:MM format. Hours are in 24 hours format. e.g. 14:30

I want to do a checking using two IF condition

1. if the time value is between 05:00 to 22:00
2. if the time value is between 22:00 to 05:00

I am not sure how to do that.

I have the time value in HH:MM format. Hours are in 24 hours format. e.g. 14:30

I want to do a checking using two IF condition

1. if the time value is between 05:00 to 22:00
2. if the time value is between 22:00 to 05:00

I am not sure how to do that.

• javascript
• date

• 1 could you show us, what did you tried so far ? – Ravi Commented Jul 20, 2017 at 4:08
• Have you tried anything so far? StackOverflow isn't a free code-writing service, and expects you to try to solve your own problem first. Please update your question to show what you have already tried, showcasing all of your relevant code in a minimal, plete, and verifiable example. – Obsidian Age Commented Jul 20, 2017 at 4:09
• Possible duplicate of check if one date is between two dates (javascript) – Ravi Commented Jul 20, 2017 at 4:10
• @Ravi—the OP doesn't have dates and doesn't need them. – RobG Commented Jul 20, 2017 at 4:23

2 Answers 2

Since times in HH:mm format can be pared directly, you just need to pare the values. The following returns true if the time is in range, false otherwise.

var range = ['05:00','22:00'];

function isInRange(value, range) {
  return value >= range[0] && value <= range[1];
}

['04:59','08:30','23:15'].forEach(function(time) {
  console.log(time + ' is ' + (isInRange(time, range)? ' ':'not ') + 'in range');
});

// Alternatively
['04:59','23:15','08:30'].forEach(function(time) {
  var inRange = isInRange(time, range);
  console.log(time + ' is in range ' + (inRange? range : range.slice().reverse()).join(' - '));
});

To provide more robust code, the input should be validated and cases over midnight should be considered.

Validation should limit hours to the range 00-23 and minutes to the range 00 to 59, e.g.

/^(([0-1][0-9])|(2[0-3])):[0-5][0-9]$/.test(time)

If the start time is less than the end time, assume that the range doesn't go over midnight, e.g. 05:00 to 22:00. If the start is greater than the end, the range does go over midnight, so:

function isInRange(value, range) {
  let re = /^(([0-1][0-9])|(2[0-3])):[0-5][0-9]$/;
  let [start, end] = range;
  // Validate values
  if ([value, start, end].some(value => !re.test(value))) {
    return;
  }

  // If start less than end, assume doesn't go over midnight
  if (start <= end) {
    return value >= start && value < end;
  
  // Otherwise, assume goes over midnight
  } else {
    return value >= start || value < end;
  }
}


// Range on same day midnight
let range = ['05:00', '22:00'];
['08:30','23:00','25:15'].forEach(value => {
  let inRange = isInRange(value, range);
  // Check returned value isn't undefined
  if (inRange === void 0) {
    console.log(`Invalid input: ${value}, [${range}]`);
  } else {
    console.log(`${value}: is ${inRange? '':'not'} in [${range}]`);
  }
});

// Range over midnight
range = ['22:00', '05:00'];
['08:30','23:00'].forEach(value => console.log(
 `${value}: is ${isInRange(value, range)? '':'not'} in [${range}]`
 ));

If paring strings doesn't suit, times can be reduced to a mon unit, say minutes and then pared, e.g.

// Convert time in H:mm format to minutes
function timeToMins(time) {
  let re = /^(([0-1]?[0-9])|(2[0-3])):[0-5][0-9]$/;
  if (!re.test(time)) return;
  let [H, m] = time.split(':');
  return H * 60 + m * 1;
}

function isInRange(time, range) {
  // Input validation
  let re = /^(([0-1]?[0-9])|(2[0-3])):[0-5][0-9]$/;
  if ([time, ...range].some(time => !re.test(time))) {
    return;
  }
  // Convert times to minutes
  let [start, end] = range.map(time => timeToMins(time));
  time = timeToMins(time);

  // If start less than end, assume doesn't go over midnight
  if (start <= end) {
    return time >= start && time < end;

    // Otherwise, assume goes over midnight
  } else {
    return time >= start || time < end;
  }
}

// Range on same day midnight
let range = ['05:00', '22:00'];
['08:30', '23:00', '25:15'].forEach(value => {
  let inRange = isInRange(value, range);
  // Check returned value isn't undefined
  if (inRange === void 0) {
    console.log(`Invalid input: ${value}, [${range}]`);
  } else {
    console.log(`${value}: is ${inRange? '':'not'} in [${range}]`);
  }
});

// Range over midnight
range = ['22:00', '05:00'];
['08:30', '23:00'].forEach(value => console.log(
  `${value}: is ${isInRange(value, range)? '':'not'} in [${range}]`
));

Try this code snippet

function dateObj(d) {
    var parts = d.split(":"),
        date  = new Date();

    date.setHours(parts[0]);
    date.setMinutes(parts[1]);
    return date;
}
if(dateObj('02:35')>= dateObj('14:30')&& dateObj('14:30')<=dateObj('22:00'))alert('true');