How to compare two datetime in javascript?

Question

I tried create markers by JSON parse from C #.I have a small problem about datetime compare in javascript.

  var nowDate= new Date();

  var LastTenMin= new Date         


        

Answer 1

I solved by SQL.

I set a new colum for difference minute between now and ReadTime.

    DifferenceMinute=DATEDIFF(MINUTE,ReadTime,GETDATE())



if(DifferenceMinute>10)

 { 

  bla bla

  }

 else 
 {

 bla bla

  }