JS validates IP subnet mask gateway and MAC methods
- 2020-06-22 23:53:16
- OfStack
This article illustrates JS's methods for verifying IP, subnet mask, gateway, and MAC. Share to everybody for everybody reference. The details are as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title> test IP</title>
</head><script language="javascript">
<!---
function checkdata()
{
var reg = /^(/d{1,2}|1/d/d|2[0-4]/d|25[0-5])(/.(/d{1,2}|1/d/d|2[0-4]/d|25[0-5])){3}$/;
if(myform.ip.value == "")
{
alert ("IP Can't be empty ");
myform.focus();
return false;
}
// validation ip legitimacy
if(myform.ip.value.match(reg))
{
// return true;
}
else
{
alert ("IP illegal ");
myform.focus();
return false;
}
if(myform.zwym.value == "")
{
alert (" The subnet mask cannot be empty ");
myform.focus();
return false;
}
// Verify the validity of the subnet mask
if(myform.zwym.value.match(reg))
{
// return true;
}
else
{
alert (" The subnet mask is not valid ");
myform.focus();
return false;
}
//
if(myform.gateway.value == "")
{
alert (" The gateway cannot be empty ");
myform.focus();
return false;
}
// Verify gateway validity
if(myform.gateway.value.match(reg))
{
// return true;
}
else
{
alert (" Illegal gateway ");
myform.focus();
return false;
}
//MAC
if(myform.mac.value == "")
{
alert ("MAC Can't be empty ");
myform.focus();
return false;
}
// validation mac legitimacy
if(myform.mac.value.match(reg))
{
// return true;
}
else
{
alert ("MAC illegal ");
myform.focus();
return false;
}
}
//-->
</script><body>
<form method="post" name="myform" onSubmit="return checkdata();">
<table width="708" height="253" border="1" id="table1" >
<tr>
<td width="186" height="53" ><div align="center">IP address :</div></td>
<td width="506" height="53">
<input type="text" name="ip" size="15" maxlength="15" /> <font color="#FF0000">*</font> Cannot be empty, must be filled in </td>
</tr>
<tr>
<td width="186" height="45" ><div align="center"> Subnet mask :</div></td>
<td width="506" height="45" > <input type="text" name="zwym" size="15" maxlength="15" /> <font color="#FF0000">*</font> Cannot be empty, must be filled in </td>
</tr>
<tr>
<td width="186" height="46" ><div align="center"> net guan :</div></td>
<td width="506" height="46">
<input type="text" name="gateway" size="15" maxlength="15" /> <font color="#FF0000">*</font> Cannot be empty, must be filled in </td>
</tr>
<tr>
<td width="186" height="48"><div align="center">MAC address :</div></td>
<td width="506" height="48" >
<input type="text" name="mac" size="15" maxlength="15" /> <font color="#FF0000">*</font> Cannot be empty, must be filled in </td>
</tr>
<tr><!---changeinfo(ip.value,zwym.value,mac.value,reboot)-->
<!-- onClick="changeinfo(ip.value,zwym.value,gateway.value,mac.value)"---->
<td height="47" colspan="2" align="center"><input type="submit" value=" submit " /> <input type="reset" value=" reset " />
</td>
</tr>
</table>
</form>
</body>
</html>
Hopefully, this article has been helpful in your javascript programming.