<html>
<head>
</head>
<body>
ip:port<input type="" name="zhzh" placeholder="ip:port" id="zhzh">
<button onclick="btn()" value="submit">test</button>
<script type="text/javascript">
ip_ip = '(25[0-5]|2[0-4]\\d|1\\d\\d|\\d\\d|\\d)';
ip_ipdot = ip_ip + '\\.';
ip_port = '(:(\\d\\d\\d\\d|\\d\\d\\d|\\d\\d|\\d))?';
isIPaddress = new RegExp('^'+ip_ipdot+ip_ipdot+ip_ipdot+ip_ip+ip_port+'$');
function btn(){
var inputValue=document.getElementById("zhzh").value;
if (!isIPaddress.test(inputValue)) {
console.log("wrong");
}
}
//10.10.117.119
</script>
</body>
</html>
