jquery 时间大小比较和获取当前时间

var d = new Date(), str = '';
str += d.getFullYear() + '-';
str += d.getMonth() + 1 + '-';
str += d.getDate() + ' ';
str += d.getHours() + ':';
str += d.getMinutes();
alert(str)

var start = new Date(row.InsuranceStime.replace("-", "/").replace("-", "/"));
var end = new Date(row.InsuranceEtime.replace("-", "/").replace("-", "/"));
// alert(start+"**"+(new Date('1900/01/01 00:00:000')))
if (Date.parse('1900/01/01 00:00:000') === Date.parse(start) || Date.parse('1900/01/01 00:00:000') === Date.parse(end)) {
return "<font>未投保</font>";

} else {
var today = new Date(mydate.toDateString() + " " + mydate.toTimeString());
if (end < today) {
return "<font>已过期</font>";
}
if (start > today) {
return "<font>未生效</font>";
}
if (row.InsuranceMoney === 0) {
return "<font>未投保</font>";
} else {
return "已投保";
}
}