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Email and domain Validation using ASP.NET

Posted By:Athira Sreejith       Posted Date: December 31, 2008    Points: 10    Category: ASP.NET Controls    URL: http://www.dotnetspark.com  
 

function checkEmail (strEmail) 
{
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var matchArray=strEmail.match(emailPat);
var user=matchArray[1];
var domain=matchArray[2];

for (i=0; i127) {
alert("Ths username contains invalid characters.");
return false;
}
}

for (i=0; i127) {
alert("Ths domain name contains invalid characters.");
return false;
}
}

if (user.match(userPat)==null) {
alert("The username doesn't seem to be valid.");
return false;
}

var atomPatern=new RegExp("^" + atom + "$");
var domArray=domain.split(".");
var slen=domArray.length;

for(i=0;i<0;i++){
if (domArray[i].search(atomPatern)==-1) {
alert("The domain name does not seem to be valid.");
return false;
}
}

if (checkTLD && domArray[domArray.length-1].length!=2 && 
domArray[domArray.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

if (slen<2) {
alert("This address is missing a hostname!");
return false;
}

return true;
}



Domain validation:

function checkDomain(name)
{
var array = new Array(
'.com','.net','.org','.biz','.coop','.info','.museum','.name',
'.pro','.edu','.gov','.int','.mil','.ac','.ad','.ae','.af','.ag',
'.ai','.al','.am','.an','.ao','.aq','.ar','.as','.at','.au','.aw',
'.az','.ba','.bb','.bd','.be','.bf','.bg','.bh','.bi','.bj','.bm',
'.bn','.bo','.br','.bs','.bt','.bv','.bw','.by','.bz','.ca','.cc',
'.cd','.cf','.cg','.ch','.ci','.ck','.cl','.cm','.cn','.co','.cr',
'.cu','.cv','.cx','.cy','.cz','.de','.dj','.dk','.dm','.do','.dz',
'.ec','.ee','.eg','.eh','.er','.es','.et','.fi','.fj','.fk','.fm',
'.fo','.fr','.ga','.gd','.ge','.gf','.gg','.gh','.gi','.gl','.gm',
'.gn','.gp','.gq','.gr','.gs','.gt','.gu','.gv','.gy','.hk','.hm',
'.hn','.hr','.ht','.hu','.id','.ie','.il','.im','.in','.io','.iq',
'.ir','.is','.it','.je','.jm','.jo','.jp','.ke','.kg','.kh','.ki',
'.km','.kn','.kp','.kr','.kw','.ky','.kz','.la','.lb','.lc','.li',
'.lk','.lr','.ls','.lt','.lu','.lv','.ly','.ma','.mc','.md','.mg',
'.mh','.mk','.ml','.mm','.mn','.mo','.mp','.mq','.mr','.ms','.mt',
'.mu','.mv','.mw','.mx','.my','.mz','.na','.nc','.ne','.nf','.ng',
'.ni','.nl','.no','.np','.nr','.nu','.nz','.om','.pa','.pe','.pf',
'.pg','.ph','.pk','.pl','.pm','.pn','.pr','.ps','.pt','.pw','.py',
'.qa','.re','.ro','.rw','.ru','.sa','.sb','.sc','.sd','.se','.sg',
'.sh','.si','.sj','.sk','.sl','.sm','.sn','.so','.sr','.st','.sv',
'.sy','.sz','.tc','.td','.tf','.tg','.th','.tj','.tk','.tm','.tn',
'.to','.tp','.tr','.tt','.tv','.tw','.tz','.ua','.ug','.uk','.um',
'.us','.uy','.uz','.va','.vc','.ve','.vg','.vi','.vn','.vu','.ws',
'.wf','.ye','.yt','.yu','.za','.zm','.zw');

var name = name;
var val = true;

var dot = name.lastIndexOf(".");
var dname = name.substring(0,dot);
var ext = name.substring(dot,name.length);
//alert(ext);

if(dot>2 && dot<57)
{
for(var i=0; i 47 && hh<59) || (hh > 64 && hh<91) 
|| (hh > 96 && hh<123) || hh==45 || hh==46)
{
if((j==0 || j==dname.length-1) && hh == 45)
{
alert("Domain name should not begin or 
end with '-'");
return false;
}
}
else{
alert("Your domain name should not 
have special characters");
return false;
}
}
}
}
else
{
alert("Your Domain name is too short/long");
return false;
}

return true;
}




     

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