利用javascript来制作ip地址
<HTML>
<HEAD>
<TITLE> ip address </TITLE>
<style>
#a3{width:30;border:0;text-align:center}
#b3{border-width:1;border-color:red;border-style:solid;width:165;font-size:9pt;background-color:#FFD700}
</style>
<script>
function mask(obj){
obj.value=obj.value.replace(/[^\d]/g,'')/*使输入确保式数字*/
key1=event.keyCode /*获取键盘命令*/
if (key1==37 || key1==39)
{ obj.blur();
nextip=parseInt(obj.name.substr(2,1))
nextip=key1==37?nextip-1:nextip+1;
nextip=nextip>=5?1:nextip
nextip=nextip<=0?4:nextip
eval("ip"+nextip+".focus()")
}
if(obj.value.length>=3)
if(parseInt(obj.value)>=256 || parseInt(obj.value)<=0)
{
alert(parseInt(obj.value)+"IP地址错误！")
obj.value=""
obj.focus()
return false;
}
else{ obj.blur ();
nextip=parseInt(obj.name.substr(2,1))+1
nextip=nextip>=5?1:nextip
nextip=nextip<=0?4:nextip
eval("ip"+nextip+".focus()")
}
}
function mask_c(obj)
{
clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))
}
</script>
</HEAD>
<BODY>
[div id=b3 >
<input type=text name=ip1 maxlength=3 id=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip2 maxlength=3 id=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip3 maxlength=3 id=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip4 maxlength=3 id=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>
[/div]
</BODY>
</HTML>
air_tuyh
2004-12-10 20:41:11
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