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<html>3
<head>4
<meta charset="utf-8">5
<title>蜜蜂教程(mifengjc.com)</title>6
<script>7
function displayResult() {8
var x = document.getElementById("submit1").value;9
alert(x);10
}11
</script>12
</head>13
<body>14
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<form>16
Email: <input type="text" id="email">17
<input type="submit" id="submit1" value="Submit form">18
</form>19
<button type="button" onclick="displayResult()">显示提交按钮的值</button>20
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</body>22
</html>