Javascript: How to validate email address with JavaScript? Javascript: Ako overiť e-mailovú adresu JavaScript?

Posted on 13. Publikované pred: dňa 13. Jun, 2009 by Dragos in Coding , JavaScript & Ajax Júna 2009 od Dragos v Kódovanie, JavaScript & Ajax

Here's a piece of code I found while I was browsing the JQuery UI pages to easily validate email addresses. Tu je kus kódu som zistil, keď som si prezeral JQuery UI stránky ľahko overiť e-mailovej adresy.

The code below represents a general validation function, that requires two parameters:1. Kód predstavuje všeobecný validačný funkciu, ktorá vyžaduje dva parametre: 1. the string value of an obkect and 2. Hodnota reťazca obkect a 2. the regular expression to check the string against regulárny výraz pre kontrolu reťazec proti

 function checkRegexp(o,regexp) { Funkcia 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: A teraz, tu je nasledujúci kód použiť, aby pre overenie e-mailovej adresy:

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 first = checkRegexp ( "e-mail @ e-mail. "regex); / / boolean false, pretože e-mailová adresa chýba tld var druhej = checkRegexp (" email@email.tld "regex); / / boolean true

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. Je to dobré pre overenie e-mailovej adresy priamo na strane klienta, pretože ušetríte serverové zdroje spotreby a klient je schopný odstrániť prípadné chyby rýchlejšie bez prekládky stránku. But you should never avoid rechecking the email (and not only emails) on the server side. Ale nikdy by ste nemali vyhnúť novú kontrolu e-mailu (a to nielen e-maily) na strane servera.