郵箱地址驗證有很多方法。在浏覽器端，js郵箱驗證可以通過正則表達式檢測。
代碼如下function isEmail(email) {
return /^((([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+(.([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+)*)|((x22)((((x20|x09)*(x0dx0a))?(x20|x09)+)?(([x01-x08x0bx0cx0e-x1fx7f]|x21|[x23-x5b]|[x5d-x7e]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([x01-x09x0bx0cx0d-x7f]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))))*(((x20|x09)*(x0dx0a))?(x20|x09)+)?(x22)))@((([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))).)+(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])))$/i.test(email);
}
或
function validateEmail(elementValue)
{
var emailPattern = /^[a-zA-Z0-9._]+[a-zA-Z0-9]+@[a-zA-Z0-9]+.[a-zA-Z]{2,4}$/;
return emailPattern.test(elementValue);
}
function checkEmail(mail) {
return /^[w-]+(.[w-]+)*@([a-z0-9-]+(.[a-z0-9-]+)*?.[a-z]{2,6}|(d{1,3}.){3}d{1,3})(:d{4})?$/.test(mail);
}
調用很簡單:
代碼如下
if (isEmail('[email protected]')){ console.log(' www.111cn.net This is email is valid'); }View Code
如果是進行服務器端驗證。像php，則最簡單的莫過於:
代碼如下$a='/([w._]{2,10})@(w{1,}).([a-z]{2,4})/';
$b='[email protected]';
if(preg_match($a,$b)){
echo "電子郵件合法";
}else{
echo "電子郵件不合法啊";
}
你要判斷一整段字符串是否都匹配就要用斷言。如^ $
/^([w._]{2,10})@(w{1,}).([a-z]{2,4})$/
注意頭和尾加上了^ $
