the user provide value is 
`var date = 2019/11/06 22:59:50;`
 but i want to convert the data of **date** as 
`date = 55;` 
from ("YYYY/MM/DD HH:mm:ss") to ("mm") 
having only the minute so that i can subtract the data as `alert(date - Date().getMinute())` so that i can save the value to a variable for conditions