如何判断输入的是两位数字

[xdqasd]

<form action="vindedit.do" method="post" name="SetEditForm">
<input type="text" name="saveyears" maxlength="2"value="<bean:write name="vo1" property="SAVEYEARS"/>" onblur="save()" >
</form>
function save()
{ var saveyear=document.SetEditForm.saveyears.value;


for (var i=0;i<saveyear.length;i++)
{
var s = saveyear.substring(i,i+1);
if (!(s >= "0" && s <="9"))
{ document.SetEditForm.saveyears.fours;
return false;
}
}
return true;
}
我的save()没执行不知道为什么

[zhaohh]

function numtest(str)
{
var parth=/^[0-9]{2}$/;
if(!parth.test(str))
return false;
return true;
}

[xdqasd]

str是什么意思

[xdqasd]

没执行阿

[ouyld]

<script>
function aa(){
var a,b
a=document.form1.text1.vlaue
b=a.lenght
if (b==2){
if ((a.substring(0,1))%2==0){
if ((a.substring(1,2))%2=1){
document.write("您输入的是2个数字")
}
}
}
}
</script>

[mjpclab]

function save()
{ var saveyear=document.SetEditForm.saveyears.value;
if (saveyear.search(/^[1-9][0-9]$/)!=-1) alert('是2位数字')

}

[xdqasd]

需要的是1-2位数字

[xdqasd]

ok,可以了

[meizz]

<input onblur="alert(/^\d{1,2}$/.test(this.value))">

[bobwen]

meizz(梅花雪) 的是正解

[zzzxxxcccvvv]

<store>

[colliecollie]

saveyear.match(/d{2}/)

[ouyld]

我也要学学正则表达试
好简便

[fason]

01是不是你要的两位数字？？