前端——扫码枪扫码

废话少说，直接上代码和截图：

 <input type="password" style="display:none"/>
<input id="AuthCode" autofocus name="txtAuthCode" type="text" class="form-control1" placeholder="请用扫码枪扫码..." style="width: 450px; height: 100px; color: black" onfocus="this.type=\'password\'" />