電子郵件驗證問題

我正在驗證用戶的電子郵件地址。但是當我打電話給這個函數時出現了問題，並且表單沒有驗證郵件地址就提交了。請告訴我該代碼有什麼問題。電子郵件驗證問題

function validateEmail(fld) { 
var error=""; 
var tfld = trim(fld.value);     
var emailFilter = /^[^@][email protected][^@.]+\.[^@]*\w\w$/ ; 
var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ; 
if (fld.value == "") { 
    fld.style.background = 'Pink'; 
    error = "You didn't enter an email address.\n"; 
} else if (!emailFilter.test(tfld)) {   
    fld.style.background = 'Pink'; 
    error = "Please enter a valid email address.\n"; 
} else if (fld.value.match(illegalChars)) { 
    fld.style.background = 'Pink'; 
    error = "The email address contains illegal characters.\n"; 
} else { 
    fld.style.background = 'White'; 
} 
return error; }

來源

2010-12-06 Adeel

請告訴*我*（每個人）的問題是什麼（即你得到了什麼錯誤信息，或者你期望的輸出以及實際輸出的不同）。特別是，如果表單提交時未經驗證，那麼您的問題肯定存在於*表單*中，而不是與此函數一起使用，除非我誤解了？ – 2010-12-06 11:06:34

如果我離開字段爲空然後它告訴「你沒有輸入電子郵件地址」，但是當我輸入非法字符，那麼它不起作用。 – Adeel 2010-12-06 11:15:47

始終返回true或false： -

function validateEmail(fld) { 
    var error=""; 
    var tfld = trim(fld.value);     
    var emailFilter = /^[^@][email protected][^@.]+\.[^@]*\w\w$/ ; 
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ; 
    if (fld.value == "") { 
     fld.style.background = 'Pink'; 
     error = "You didn't enter an email address.\n"; 
    } else if (!emailFilter.test(tfld)) {   
     fld.style.background = 'Pink'; 
     error = "Please enter a valid email address.\n"; 
    } else if (fld.value.match(illegalChars)) { 
     fld.style.background = 'Pink'; 
     error = "The email address contains illegal characters.\n"; 
    } else { 
     fld.style.background = 'White'; 
    } 
    if (error == '') 
    { 
     return true; 
    } 
    else 
    { 
     alert(error); 
     return false; 
    }

}

調用你的函數是這樣的： -

<input type="submit" onsubmit="return validateEmail(email.val)">

來源

2010-12-06 11:13:19

function validateEmail(fld) { 
var error=""; 
var tfld = trim(fld.value);     
var emailFilter = /^[^@][email protected][^@.]+\.[^@]*\w\w$/ ; 
var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ; 
if (fld.value == "" || fld.value.length == 0) { 
    fld.style.background = 'Pink'; 
    error = "You didn't enter an email address.\n"; 
} else if (!emailFilter.test(tfld)) {   
    fld.style.background = 'Pink'; 
    error = "Please enter a valid email address.\n"; 
} else if (fld.value.match(illegalChars)) { 
    fld.style.background = 'Pink'; 
    error = "The email address contains illegal characters.\n"; 
} else { 
    fld.style.background = 'White'; 
} 
return error; }

試試！

來源

2010-12-06 11:08:28 thedom

電子郵件驗證問題

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