廢話少說，直接上代碼和截圖：
<input type="password" style="display:none"/> <input id="AuthCode" autofocus name="txtAuthCode" type="text" class="form-control1" placeholder="請用掃碼槍掃碼..." style="width: 450px; height: 100px; color: black" onfocus="this.type='password'" />
