我试图转换(我所发现的)最好的电子邮件验证功能(位于:http://www.linuxjournal.com/article/9585?page=0,3)从PHP的JavaScript。无论“你不应该使用JavaScript进行验证,因为JavaScript可以被禁用”。显然,我不能离开函数的checkdnsrr()部分,但其他所有内容都应该可以通过javascript来实现。Javascript测试()方法语法错误?
迄今为止功能工作正常,直到这条线:else if(/\.\./.test(domain)) {
我知道这是没有上下文的好看不中用,所以全功能如下。什么也奇怪的是,它提供了“通行证”的行具有完全相同的正则表达式:这是之前使用几行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;
}
问题是什么?什么是错误? – thefourtheye
'isValid =“false”;'? – SLaks
它在控制台中显示“SyntaxError:syntax error”。 – Amygdala