JS验证IP:端口 [英] JS Validation IP:Port
本文介绍了JS验证IP:端口的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个问题,关于如何一起验证IP:Port. 例如:
I have a question, on how to validate IP:Port together. example:
192.158.2.10:80<-有效
192.158.2.10:80 <--Valid
192.158.2.10< ---无效
192.158.2.10 <---Invalid
所以端口是必须的,我找到了一些IP验证(正则表达式),但是要与端口组合起来就没有运气了.我不想为端口使用单独的输入字段.
So the port is a must, I found some IP validation(Regex) but to be combind with port no luck. I dont want to use a seperate input field for port.
我的主意是这样:
var str = '192.168.10.2:80';
var substr = ':';
if (str.indexOf(substr) !== -1){
var pieces = str.split(':', 2);
var ip = pieces[0];
var port = pieces[1];
//and here validate ip and port
}else{
console.log('the char '+substr+' is not there');
}
这是正确的方法吗?还是更简单?
Is this right way? or there more simple?
推荐答案
正则表达式必须荒谬地长,以验证数字是否在可接受的范围内.相反,我会用这个:
A regular expression would have to be ridiculously long in order to validate that the numbers fall within the acceptable range. Instead, I'd use this:
function validateIpAndPort(input) {
var parts = input.split(":");
var ip = parts[0].split(".");
var port = parts[1];
return validateNum(port, 1, 65535) &&
ip.length == 4 &&
ip.every(function (segment) {
return validateNum(segment, 0, 255);
});
}
function validateNum(input, min, max) {
var num = +input;
return num >= min && num <= max && input === num.toString();
}
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