<form action="/dy/html/getpost">

E-mail: <input type="email" id="myEmail" name="email" autocomplete="on">

<input type="submit">

</form>

<p>点击 "尝试一下" 按钮查看 email 字段的 autocomplete 属性是 "on" 还是 "off"</p>

<button onclick="myFunction()">尝试一下</button>

<p><strong>注意：</strong>Internet Explorer 9 及更早 IE 版本，Safari 浏览器不支持 input type="email 元素</p>

<p id="demo"></p>

<script>

function myFunction() {

    var x = document.getElementById("myEmail").autocomplete;

    document.getElementById("demo").innerHTML = x;

}

</script>

​