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检测IP地址的javascript
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检测IP地址的javascript
HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME=\"Generator\" CONTENT=\"EditPlus\">
<META NAME=\"Author\" CONTENT=\"\">
<META NAME=\"Keywords\" CONTENT=\"\">
<META NAME=\"Description\" CONTENT=\"\">
</HEAD>
<BODY>
<script language=\"javascript\">
function ipCheck()
{
ipValue=document.form1.ipaddr.value;
var reg = /^\\d{1,3}(\\.\\d{1,3}){3}$/;
if(reg.test(ipValue))
{
var ary = ipValue.split(\'.\');
for(key in ary)
{
if(parseInt(ary[key]) > 255)
{
alert(\"IP error\");
document.form1.ipaddr.focus();
return false;
}
}
}else{
alert(\"IP error\");
document.form1.ipaddr.focus();
return false;
}
}
</script>
<form method=\"post\" action=\"\" onsubmit=\"return ipCheck()\" name=form1>
<input type=text name=ipaddr>
<INPUT TYPE=\"submit\">
</form>
</BODY>
</HTML>
HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME=\"Generator\" CONTENT=\"EditPlus\">
<META NAME=\"Author\" CONTENT=\"\">
<META NAME=\"Keywords\" CONTENT=\"\">
<META NAME=\"Description\" CONTENT=\"\">
</HEAD>
<BODY>
<script language=\"javascript\">
function ipCheck()
{
ipValue=document.form1.ipaddr.value;
var reg = /^\\d{1,3}(\\.\\d{1,3}){3}$/;
if(reg.test(ipValue))
{
var ary = ipValue.split(\'.\');
for(key in ary)
{
if(parseInt(ary[key]) > 255)
{
alert(\"IP error\");
document.form1.ipaddr.focus();
return false;
}
}
}else{
alert(\"IP error\");
document.form1.ipaddr.focus();
return false;
}
}
</script>
<form method=\"post\" action=\"\" onsubmit=\"return ipCheck()\" name=form1>
<input type=text name=ipaddr>
<INPUT TYPE=\"submit\">
</form>
</BODY>
</HTML>