javascript 判断两个日期之差的示例代码

function better_time(strDateStart,strDateEnd){
  var strSeparator = "-"; //日期分隔符
  var strDateArrayStart;
  var strDateArrayEnd;
  var intDay;
  strDateArrayStart = strDateStart.split(strSeparator);
  strDateArrayEnd = strDateEnd.split(strSeparator);
  var strDateS = new Date(strDateArrayStart[0] + "/" + strDateArrayStart[1] + "/" + strDateArrayStart[2]);
  var strDateE = new Date(strDateArrayEnd[0] + "/" + strDateArrayEnd[1] + "/" + strDateArrayEnd[2]);
  intDay = (strDateE-strDateS)/(1000*3600*24);
  return intDay;
 }

function checkTime(){
   var dateInp=$("#dateInp").val();
   var day1=Date.parse(dateInp.replace(/-/g, "/"));
   var nowDate = new Date();
   var dateStr = nowDate.getFullYear()+"/"+(nowDate.getMonth() + 1)+"/"+nowDate.getDate();        
   var day2=Date.parse(dateStr);
   var apartTime=day1-day2;
   var apartDay=parseInt(apartTime / (1000 * 60 * 60 * 24));
   if(apartDay ==0){
     alert("不能预约当天");
     return false;
   }else if (apartDay < 1 || apartDay > 3){
     alert("预约日期超出范围");
     return false;
   } 
 }

var date1 = new Date("2013-11-29");
 var date2 = new Date("2013-(www.jb51.net)11-29");
 console.log(date1.getTime() == date2.getTime()); //true

var date1 = new Date("2013-11-29");
 var date2 = new Da(www.jb51.net)te("2013-11-29");
 console.log(date1 == date2); //false