How to Calculate the Total Duration in Hours ?

Question

Hello            I have the Start time and End time using Bootstrap timepicker I need a result total Duration in Hours and Minutes  How to Calculate the Spending Hours .? yet now i am trying the Start time(10AM) and End time (10 PM) Total Hours is =12Hours but i get result is 0 hrs  till now i am calculating the Numbers only . I dont know how to calculate the time Duration for 24 hours In the Below i am attached the Source code till Now i tried Kindly give the solution  My Expected result is Highlighted in the red color:   Source Code       Thanks & Regards  Felish

Manas Mohapatra · Answer

Try with below code: JavaScript Functions demo > function parseTime(s) { var part = s.match(/(\d+):(\d+)(?: )?(am|pm)?/i); var hh = parseInt(part[1] 10); var mm = parseInt(part[2] 10); var ap = part[3] ? part[3].toUpperCase() : null ; if (ap === AM ) { if (hh == 12) { hh = 0; } } if (ap === PM ) { if (hh != 12) { hh += 12; } } return hh + : + mm; } var startTime = parseTime( 10:30 AM ); var endTime = parseTime( 11:30 PM ); alert( Time Difference: +(parseInt(endTime.split( : )[0]) - parseInt(startTime.split( : )[0])) + : + (parseInt(endTime.split( : )[1]) - parseInt(startTime.split( : )[1])));

Nitin Sontakke · Answer

I have absolutely zero knowledge about this however from the description of it you seem to be missing the AM / PM part of the time. May be you should not be accessing the properties (or text values) at all. There will be separate set of properties available to you in 24 hour format (for example 13 for 1 PM). Try looking for those and use them.

Bikesh Srivastava · Answer

Hi i think manas is correct.

Felish Anand · Answer

Hello Nitin Sontakke Thanks for the Reply I am tried without using AM/Pmmy problem is i dont know how to do calculate tha AM/pm calculation