var start = $("#startDate").val();
var end = $("#endDate").val();
var date1 = new Date(start.replace(/[^\/\d]+/g,"/")+",0:0:0");
var date2 = new Date(end.replace(/[^\/\d]+/g,"/")+",0:0:0");
date1.setMonth(date1.getMonth() + 2);
if (date2 > date1) {
alertMsg.warn("查询最长时间为两个月");
}
function checkTime(){
var dateInp=$("#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;
}
}
参考，记得采纳
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