我試圖轉換(我所發現的)最好的電子郵件驗證功能(位於:http://www.linuxjournal.com/article/9585?page=0,3)從PHP的JavaScript。無論「你不應該使用JavaScript進行驗證,因爲JavaScript可以被禁用」。顯然,我不能離開函數的checkdnsrr()部分,但其他所有內容都應該可以通過javascript來實現。Javascript測試()方法語法錯誤?
迄今爲止功能工作正常,直到這條線:else if(/\.\./.test(domain)) {
我知道這是沒有上下文的好看不中用,所以全功能如下。什麼也奇怪的是,它提供了「通行證」的行具有完全相同的正則表達式:這是之前使用幾行else if(/\.\./.test(local)) {
。奇怪。
function validEmail(email) {
var isValid = true;
var atIndex = email.indexOf("@");
var ending = email.length - 1;
if(typeof(atIndex) == "boolean" && !atIndex) {
isValid = false;
}
else {
var domain = email.substr(atIndex+1);
var local = email.substr(0, atIndex);
var localLen = local.length;
var domainLen = domain.length;
if(localLen < 1 || localLen > 64) {
// local part length exceeded
isValid = false;
}
else if(domainLen < 1 || domainLen > 255) {
// domain part length exceeded
isValid = false;
}
else if(local[0] == '.' || local[localLen-1] == '.') {
// local part starts or ends with '.'
isValid = false;
}
else if(/\.\./.test(local)) {
// local part has two consecutive dots
isValid = false;
}
else if(/^[A-Za-z0-9\\-\\.]+$/.test(domain) == false)
// character not valid in domain part
isValid = false;
}
else if(/\.\./.test(domain)) {
// domain part has two consecutive dots
isValid = false;
}
else if(/^(\\\\.|[A-Za-z0-9!#%&`_=\/$'*+?^{}|~.-])+$/.test(local.replace("\\\\",""))) {
// character not valid in local part unless
// local part is quoted
if(/^"(\\\\"|[^"])+"$/.test(local.replace("\\\\",""))) {
isValid = false;
}
}
}
return isValid;
}
問題是什麼?什麼是錯誤? – thefourtheye
'isValid =「false」;'? – SLaks
它在控制檯中顯示「SyntaxError:syntax error」。 – Amygdala