<html>
<body>
<h3>以下实例演示了如何访问 Email 字段</h3>
E-mail: <input type="email" id="myEmail" value="john@example.com">
<p>点击按钮获取 email 字段的邮箱地址。</p>
<button onclick="myFunction()">点我</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myEmail").value;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>