<html>
<head>
    <meta http-equiv=Content-Type content="text/html;charset=utf-8">
    <meta name="viewport"
          content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"/>
    <title>Android</title>
    <script language="javascript">
function a(){
document.body.innerHTML = document.body.innerHTML+"<input />";
}

    </script>
</head>
<body>
用户名<input type="text" id="text" value=""/><br/>
<br/>
用户名<input type="text" id="text" value=""/><br/>
<br/>
用户