App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)更佳 )
<!DOCTYPE html>
<html>
<head>
<script>
function displayResult()
{
var x=document.getElementById("mySelect").form.id;
alert(x);
}
</script>
</head>
<body>
<form id="form1">
Select your favorite fruit:
<select id="mySelect">
<option>Apple</option>
<option>Orange</option>
<option>Pineapple</option>
<option>Banana</option>
</select>
</form>
<button type="button" onclick="displayResult()">Display id of container form</button>
</body>
</html>
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