js比较日期

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  if (Date.parse($("#startdate").val().replace("-", "/")) > Date.parse($("#enddate").val().replace("-", "/"))) {
                    alert("起始日期要小于或等于截至日期");
                    return;
                }

 注意日期格式转化。

 

var myDate=new Date();
myDate.setFullYear(2008,8,9);

var today = new Date();

if (myDate>today)
{
alert("Today is before 9th August 2008");
}
else
{
alert("Today is after 9th August 2008");
}