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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("mySelect").selectedIndex;9
var y = document.getElementsByTagName("option");10
alert("" + y[x].text + " 是默认选项吗? " + y[x].defaultSelected);11
}12
</script>13
</head>14
<body>15
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<form>17
选择你最喜欢的水果:18
<select id="mySelect">19
<option>Apple</option>20
<option>Orange</option>21
<option selected="selected">Pineapple</option>22
<option>Banana</option>23
</select>24
</form>25
<button type="button" onclick="displayResult()">选中的是默认的水果吗?</button>26
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</body>28
</html>