How to determine if the specific time is between given time range in javascript

Question

i want to check var check_val in between two time var open_time and var close_time

var open_time  = "23:30";
var close_time = "06:30";
var check_val  ="02:30";
if(Date.parse ( check_val ) > Date.parse ( open_time ) && Date.parse ( check_val ) < Date.parse ( close_time )){
    var flag=1;
} else { 
    var flag=2
}

the result is always else part

Answer 1

Date.parse() accepts dates in RFC2822 or ISO8601 formats.

In your case, it always returns NaN.

Date.parse("23:30"); // NaN

Using the appropriate Date format works as expected:

var open_time = Date.parse("2011-10-09T23:30");
var close_time = Date.parse("2011-10-10T06:30");
var check_val = Date.parse("2011-10-10T02:30");

if( check_val > open_time && check_val < close_time ) {
    var flag=1;
} else { 
    var flag=2
}