JS日期和时间比较

var da = new Date();
da.setHours(0);
da.setSeconds(0);
da.setMinutes(0);da.setMilliseconds(0);
var dabn = new Date(2009,(8-1),30);
alert(da.toLocaleString()+">"+dabn.toLocaleString()+"="+((da>dabn)?"成立":"不成立"));

var datime1 = new Date(1900,0,1,4,32,0);
var datime2 = new Date(1900,0,1,4,35,0);
alert(datime1.toLocaleString()+">"+datime2.toLocaleString()+"="+((datime1>datime2)?"成立":"不成立"));