try
---------------------------------------------------------
<script language="javascript">
var reg =/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;alert(reg.test("1.1.1.1"));
</script>
---------------------------------------------------------
<script language="javascript">
var reg =/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;alert(reg.test("1.1.1.1"));
</script>
<FORM action=... method=get target=_blank >
<TD width=120>请输入ip地址</TD>
<TD width=160><INPUT name=q></TD>
<TD width=*><INPUT name="submit" type=submit value=查询></TD>
</FORM>
想通过提交表单来触发。
如何实现呢？
-------------------------------------------------
<script language="javascript">
function FormCheck(frm){
if(!isValidIP(frm.q.value)){
alert("请输入正确的IP地址");
frm.q.focus();
frm.q.select();
return false;
}
}function isValidIP(str){
return /((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/.test(str);
}
</script>
<FORM action="" method="get" target="_blank" onsubmit="return FormCheck(this);">
<TD width=120>请输入ip地址</TD>
<TD width=160><INPUT name="q"></TD>
<TD width=*><INPUT name="submit" type=submit value=查询></TD>
</FORM>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style>
.a3{width:30;border:0;text-align:center}
</style>
<script>
function mask(obj){
obj.value=obj.value.replace(/[^\d]/g,'')
key1=event.keyCode
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>
<title>IP地址输入</title></head>
<body>IP地址输入
<div style="border-width:1;border-color:balck;border-style:solid;width:165;font-size:9pt">
<input type=text name=ip1 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip2 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip3 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>.
<input type=text name=ip4 maxlength=3 class=a3 onkeyup="mask(this)" onbeforepaste=mask_c()>
</div>
</body></html>
.ipSection{
border:none;
width:21px;
}
</style>
<input type="hidden" name="ip" id="ip" value="0.0.0.0"><input type="button" onclick="alert(document.all.ip.value);" value="showIp">
<div style="border:1px solid #888;width:110px;">
<input type="text" name="ipSection">.<input type="text" name="ipSection">.<input type="text" name="ipSection">.<input type="text" name="ipSection">
</div>
<script language="javascript">
var ip = document.getElementsByName("ipSection");
for(var i=0;i<ip.length;i++){
ip[i].className="ipSection";
ip[i].maxLength=3;
ip[i].value=0;
ip[i].index=i;
ip[i].onfocus=function(){this.select();}
ip[i].onkeydown=function(){
if(!(event.keyCode>=48 && event.keyCode<=57) && !(event.keyCode>=96 && event.keyCode<=105))event.returnValue=false;
}
ip[i].onkeyup=function(){
document.all.ip.value=ip[0].value+"."+ip[1].value+"."+ip[2].value+"."+ip[3].value;
if(this.value.length==3 && event.keyCode!=8 && event.keyCode!=46 && !(event.keyCode>=37 && event.keyCode<=40)){
if(this.index==3)return;
document.getElementsByName("ipSection")[this.index+1].focus();
//alert(event.keyCode);
}
}
ip[i].onblur=function(){
if(this.value*1>255)this.value=255;
}
}
</script>