取系统当前的时间,再连成字符串,比较function DateDemo(){
var d, s = "今天日期是: ";
d = new Date();
s += (d.getMonth() + 1) + "/";
s += d.getDate() + "/";
s += d.getYear();
return(s);
}
var d, s = "今天日期是: ";
d = new Date();
s += (d.getMonth() + 1) + "/";
s += d.getDate() + "/";
s += d.getYear();
return(s);
}
function comparedate(cs){
var d, s = "";
d = new Date();
s += d.getYear();
s += (d.getMonth() + 1);
s += d.getDate();
if(Number(cs)>Number(s))
alert("Greater");
else if(Number(cs)==Number(s))
alert("Equal");
else alert("Lesser");
}</script>
<input id=t>
<button onclick="comparedate(t.value)">compare</button>
var d
d = new Date();
s += d.getYear();
s += (d.getMonth() + 1;
s += d.getDate();
if ((parseInt("20031007")-parseInt(s))>0)
alert("大于当前时间");
else
alert("不大于当前时间");}
var d
d = new Date();
s += d.getYear();
s += (d.getMonth() + 1;
s += d.getDate();
if ((parseInt("x")-parseInt(s))>0)
alert("大于当前时间");
else
alert("不大于当前时间");}