檢測 IP的正則表達式

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/*ip正則表達式*/
/^((?:(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))\.){3}(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d))))$/

/*IP正則校驗*/
    function checkIsIp(ip) {
        var pattern = /^((25[0-5]|2[0-4]\d|[01]?\d\d?)($|(?!\.$)\.)){4}$/;
        if (!pattern .exec(ip)) return false
        return true
    }
/*IP正則校驗 多個ip 之間使用  , 分割*/
    function checkIsIps(ips) {
        var reg = /^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/
        var valdata = ips.split(',');
        for(i=0;i<valdata.length;i++){
            if(reg.test(valdata[i])== false){
                return false;
            }
        }
        return true
    }