// Copyright, Ken McGinnis / Millennia Corporation // // see checkemail.js.readme.txt // // Place the below two lines in the section of the calling page. // // // Call it using the following statement from either the onblur event of the email // field itself and / or the onclick or onsubmit event of the submission button or form: // // validateEmail(email_field,mandatory,messages); // // The email address to be validated needs to be passed in place of email_field in the above code. // If the email field is mandatory then the mandatory field should contain '1' otherwise it should // be '0'. The messages field can be set to '1' to return individual messages about which particular // test that the email address failed to meet. The error messages will be suppressed if this is set // to '0' and you can provide your own failure message. The value returned will be true if the email // address is considered to be valid and false if it isn't. // // If you prefer you can incorporate the call into an if statement processing the appropriate code // based directly on the value returned instead of having to test the valid_email field. For example // you could place the following into your validation code to validate a mandatory email field: // // if (!CheckEmail(emailfield,1,1)) { // alert('email address is invalid or was not entered'); // return false; // } // // This validation routine avoids the use of regular expressions and sticks with the most simple javascript code so that it can validate email addresses in all browsers. function CheckEmail(addr,man,db) { // alert('Ken, CheckEmail was called'); if (addr == '' && man) { if (db) alert('Email address is mandatory.'); return false; } var invalidChars = '\/\'\\ ";:?!()[]\{\}^|'; for (i=0; i -1) { if (db) alert('Email address contains invalid characters.'); return false; } } for (i=0; i127) { if (db) alert("Email address contains non ascii characters."); return false; } } var atPos = addr.indexOf('@',0); if (atPos == -1) { if (db) alert('Email address must contain an @ character.'); return false; } if (atPos == 0) { if (db) alert('Email address must not start with an @ character.'); return false; } if (addr.indexOf('@', atPos + 1) > - 1) { if (db) alert('Email address must contain only one @ character.'); return false; } if (addr.indexOf('.', atPos) == -1) { if (db) alert('Email address must contain a period in the domain name.'); return false; } if (addr.indexOf('@.',0) != -1) { if (db) alert('Period must not immediately follow @ in email address.'); return false; } if (addr.indexOf('.@',0) != -1){ if (db) alert('Period must not immediately precede @ in email address.'); return false; } if (addr.indexOf('..',0) != -1) { if (db) alert('Two periods must not be adjacent in email address.'); return false; } //var suffix = addr.substring(addr.lastIndexOf('.')+1); //if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum' && suffix != 'travel') { // if (db) alert('invalid primary domain in email address'); // return false; //} var arr = new Array('.com','.net','.org','.biz','.coop','.info','.travel', '.museum','.name','.pro','.edu','.gov','.int','.mil','.arpa','.aero', '.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','.cs','.cu','.cv','.cx','.cy','.cz','.de','.dj','.dk','.dm','.do', '.dz','.ec','.ee','.eg','.eh','.er','.es','.et','.eu','.fi','.fj','.fk', '.fm','.fo','.fr','.ga','.gd','.ge','.gf','.gg','.gh','.gi','.gl','.gm', '.gn','.gp','.gq','.gr','.gs','.gt','.gu','.gw','.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','.me','.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','.nt','.nu', '.nz','.om','.pa','.pe','.pf','.pg','.ph','.pk','.pl','.pm','.pn','.pr', '.ps','.pt','.pw','.py','.qa','.re','.ro','.ru','.rw','.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','.wf','.ws', '.ye','.yt','.yu','.za','.zm','.zw'); var dot = addr.lastIndexOf("."); var ext = addr.substring(dot,addr.length); var val = true; for(var i=0; i