js 验证日期时间格式
<script language="网页特效">
function check(){
var a=/^[1-2]d{3}-(0?[1-9]|1[0-2])-(0?[1-9]|[12][0-9]|3[0-1])$/ ;
if (document.biao.riqi.value.match(a) ){
alert("日期格式不正确!")
return false
}
else
return true
}
</script>
日期时间验证实例
<script language="javascript">
function formattime(str)
{var r = str.match(/^(d{1,4})(-|/)(d{1,2})(d{1,2})$/);
if(r==null) return false;
var d= new date(r[1], r[3]-1, r[4]);
return (d.getfullyear()==r[1]&&(d.getmonth()+1)==r[3]&&d.getdate()==r[4]);}
function checkdata(cform){
if (document.vbform.bdaynew.value=="")
{
alert("截止日期不能为空,请输入!");
document.vbform.bdaynew.focus();
return false;
}
if (!formattime(cform.bdaynew.value))
{
alert("截至日期格式错误!");
cform.bdaynew.focus();
return false;
}return true;
}</script>
<form name="vbform" onsubmit="return checkdata(this);">
<input name="bdaynew" type="text" size="25" class="input">
<span style="color:#ff0000">时间格式为2007-01-01或2007-1-1</span>
</form>
下面提供一款日期大小比较
<script language="javascript">string.prototype.mytrim = function(){return this.replace(/(^s*)|(s*$)/g, "");}string.prototype.myltrim = function(){return this.replace(/(^s*)/g, "");}string.prototype.myrtrim = function(){return this.replace(/(s*$)/g, "");}function checksubmit(){var begintime =document.getelementbyid("begintime").value.mytrim();var endtime =document.getelementbyid("endtime").value.mytrim();//输入的日期格式:2009-08-12/14:52var pattern = /^((d{2}(([02468][048])|([13579][26]))-((((0[13578])|(1[02]))-((0[1-9])|([1-2][0-9])|(3[01])))|(((0[469])|(11))-((0[1-9])|([1-2][0-9])|(30)))|(02-((0[1-9])|([1-2][0-9])))))|(d{2}(([02468][1235679])|([13579][01345789]))-((((0[13578])|(1[02]))-((0[1-9])|([1-2][0-9])|(3[01])))|(((0[469])|(11))-((0[1-9])|([1-2][0-9])|(30)))|(02-((0[1-9])|(1[0-9])|(2[0-8]))))))(/(((0[0-9])|(2[0-3])|(1[0-9])):([0-5][0-9])))?$/;//对开始时间进行验证if(begintime == "") {alert("开始时间不能为空");return false;}if(!pattern.exec(begintime)){alert('请输入正确的开始时间');return false;}//对结束时间进行验证if(endtime == "") {alert("结束时间不能为空");return false;}if(!pattern.exec(endtime)){alert('请输入正确的结束时间');return false;}//验证开始时间和结束时间的合法性var t1 = qrbegintime.replace("/"," ");var t2 = qrendtime.replace("/"," ");//时间字符串的格式要为:"2009-08-12 14:54"才能正确构造出一个datevar date1 = new date(t1.replace("-","/"));var date2 = new date(t2.replace("-","/"));var n = date1.gettime() - date2.gettime();if(!(n<0)){alert("结束时间要晚于开始时间");return false;}return true;}</script>