var dt1 = new Date();
dt1.setDate(dt1.getDate()-1);
var dt2 = new Date();
if (dt2>dt1)
alert("good");
else
alert("something is really wrong");
dt1.setDate(dt1.getDate()-1);
var dt2 = new Date();
if (dt2>dt1)
alert("good");
else
alert("something is really wrong");
day=DateDiff("d",dt1,dt2)
javascript好象只能用valueOf()相减了
day=(dt2.valueOf( )-dt1.valueOf( ))/86400000
值B为现在日期 var b = new Date(); 值为 Wed Sep 5 10:55:11 UTC+0800 2001 如何将A,B比较,得出小时差?
astr=astr.replace("-","/");
var a = new Date(astr);
var bstr = "Wed Sep 5 10:55:11 UTC+0800 2001";
var b = new Date(bstr);
hours = parseInt((b.getTime()-a.getTime())/3600000);