以企業郵箱為例：@後面不能是qq 126 163 188 gmail yahoo sina hotmail suhu sogu 等單詞。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script>
function email1(){
var Rex=/\w[-\w.+]*@(?!qq\b|163\b|126\b|188\b|gmail\b|yahoo\b|sina\b|hotmail\b|suhu\b|sogu\b)([\w][\w]+\.)+[A-Za-z]{2,14}/;
var email=document.getElementById("email").value;
var username_err=document.getElementById("err_email");
if(email==""){
username_err.innerHTML="郵箱不能為空";
username_err.style.color="red";
return false
}else{
if(!Rex.test(email)){
console.log(email);
username_err.innerHTML="郵箱格式不正确";
username_err.style.color="red";
return false
}else{
console.log(email);
username_err.innerHTML="";
return true
}
}
}
</script>
</head>
<body>
<div class="formControls col-xs-4 col-sm-5">
<input type="text" id="email" placeholder="請輸入企業郵箱" name="email" value="" class="input-text" required oninput="email1()" >
<span id="err_email"></span>
</div>
</body>
</html> ![實作電腦功能[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)