根据上下午计算时间

$(function () {
if ($() {
$("input[name=‘DATA_16‘]").attr("onchange", "jsTime()");
$("input[name=‘DATA_17‘]").attr("onchange", "jsTime()");
$("select[name=‘DATA_18‘]").attr("onchange", "jsTime()");
$("select[name=‘DATA_19‘]").attr("onchange", "jsTime()");
//$("input[name=‘DATA_7‘]").attr("readonly", "readonly");
}
})
function jsTime() {
var startDate = $("input[name=‘DATA_16‘]").val();//开始日期
var EndDate = $("input[name=‘DATA_17‘]").val();//结束日期
startDate = startDate.replace("T", " ");
EndDate = EndDate.replace("T", " ");
if (startDate > EndDate) {
alert("开始日期不应大于结束日期！");
}
else {
GetDateDiff(startDate, EndDate ,"day");
}
}
function GetDateDiff(startTime, endTime, diffType) {

//将xxxx-xx-xx的时间格式，转换为 xxxx/xx/xx的格式

startTime = startTime.replace(/\-/g, "/");

endTime = endTime.replace(/\-/g, "/");

//将计算间隔类性字符转换为小写

diffType = diffType.toLowerCase();

var sTime = new Date(startTime); //开始时间

var eTime = new Date(endTime); //结束时间

//作为除数的数字

var timeType = 1;

switch (diffType) {

case "second":

timeType = 1000;

break;

case "minute":

timeType = 1000 * 60;

break;

case "hour":

timeType = 1000 * 3600;

break;

case "day":

timeType = 1000 * 3600 * 24;

break;

default:

break;

}
var Request = (eTime.getTime() - sTime.getTime()) / parseInt(timeType) //计算时间
Request = Request.toFixed(1);
var d = 0.5;
if($("select[name=‘DATA_18‘]").val() != $("select[name=‘DATA_19‘]").val())
d = 1;
Request = parseFloat(Request);
d = parseFloat(d);
$("input[name=‘DATA_7‘]").val(Request + d);

}

原文地址：https://www.cnblogs.com/wulonglong/p/12207207.html