標籤：put required for body turn inner var 正則 text
<!DOCTYPE html>
<html>
<body>
<p>使用者名稱Regex ，4到16位（字母，數字，下滑線，減號）</p>
<p id="demo"></p>
<form action="" method="get">
<p>使用者名稱: <input type="text" name="fname" required></p>
<button onclick="myFunction1()">瘋狂點我</button>
<p>密碼強度，最少6位，包括至少1個大寫字母，1個小寫字母，1個數字，1個特殊字元</p>
<p>密碼: <input type="password" name="lname" required></p>
<button onclick="myFunction()">瘋狂點我</button>
<p>郵箱 <input type="text" name="lname" required></p>
<button onclick="myFunction()">瘋狂點我</button>
<p>身份證 <input type="text" name="lname" required></p>
</form>
<script>
function myFunction1() {
var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,16}$/;
if (!patrn.exec(s)) return false
return true
document.getElementById("demo").innerHTML = result;
}
</script>
</body>
</html>
Regex驗證問題
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