Javascript: How to validate email address with JavaScript? Javascript: kako potrditi e-naslov z JavaScript?

Posted on 13. Objavljeno dne 13. Jun, 2009 by Dragos in Coding , JavaScript & Ajax Junij 2009, ki ga Dragos v Coding, JavaScript in Ajax

Here's a piece of code I found while I was browsing the JQuery UI pages to easily validate email addresses. Tukaj je del kode sem našel, ko sem bil brskanjem jQuery UI strani, ki jih zlahka potrditi e-poštne naslove.

The code below represents a general validation function, that requires two parameters:1. Zbornik spodaj predstavlja splošno funkcijo potrjevanja, ki zahteva dva parametra: 1. the string value of an obkect and 2. tetiva vrednost obkect in 2. the regular expression to check the string against regularni izraz za preverjanje niz proti

 function checkRegexp(o,regexp) { Funkcija checkRegexp (o, Regexp) ( 
         if ( !( regexp.test( o ) ) ) { if (! (regexp.test (o))) ( 
             return false; return false; 
         } else { ) Else ( 
             return true; return true; 
         } ) 
     } )

Now, here's the following code to use in order to validate email addresses: Zdaj, tukaj je naslednje kode za uporabo, da bi potrditev e-poštne naslove:

var regex=/^((([az]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([az]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([az]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([az]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([az]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([az]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([az]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([az]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([az]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([az]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i; var first=checkRegexp("email@email.",regex); //boolean false, because the email address is missing the tld var second=checkRegexp("email@email.tld",regex); //boolean true var Regex =/^((([ az] | \ d | [! # \ $% & '\ * \ + \ - \ / = \? \ ^ _ `(\ |}~]|[ \ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF]) + (\. ([az] | \ d | [! # \ $% & '\ * \ + \ - \ / = \? \ ^ _ `(\ |}~]|[ \ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF ])+)*)|(( \ x22 )(((( \ X20 | \ x09) * (\ x0d \ x0a) )? (\ X20 | \ x09 )+)?(([ \ x01-\ x08 \ x0b \ x0c \ x0e-\ x1f \ x7f] | \ x21 | [\ x23-\ x5b] | [\ x5d-\ x7e ] | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF]) | (\ \ ([\ x01-\ x09 \ x0b \ x0c \ x0d-\ x7f] | [\ u00A0-\ uD7FF \ uF900 - \ uFDCF \ uFDF0-\ uFFEF ]))))*((( \ X20 | \ x09) * (\ x0d \ x0a))? (\ X20 | \ x09 )+)?( \ x22 )))@( (([az] | \ d | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF ])|(([ az] | \ d | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0 - \ uFFEF]) ([az] | \ d | - | \ .|_|~|[ \ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF ])*([ az] | \ d | [ \ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF]))) \ .)+(([ az] | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF ])|(( [az] | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF]) ([az] | \ d | - | \ .|_|~|[ \ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF ])*([ az] | [\ u00A0-\ uD7FF \ uF900-\ uFDCF \ uFDF0-\ uFFEF]))) \.? $ / i; var prvi = checkRegexp ( "email @ email. "regularni izraz); / / boolean false, saj e-poštni naslov manjka TLD var drugi = checkRegexp (" email@email.tld ", regularni izraz); / / boolean res

It's good to validate email addresses right on the client side, because you save server resources consumption and the client is also able to correct any errors faster, without reloading the page. To je dobro za potrditev e-poštne naslove na desni strani odjemalca, ker si shranite strežnik porabo sredstev in stranka je prav tako lahko popravi morebitne napake hitreje, brez pretovarjanja stran. But you should never avoid rechecking the email (and not only emails) on the server side. Ampak nikoli se morajo izogibati ponovni email (in ne samo e-pošte) na strani strežnika.