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The form property returns a reference to the dropdown list's parent form.
form属性可返回下拉列表的父表参考
selectObject.form |
<html>
<head>
<script type="text/javascript">
function showFormId()
{
alert(document.getElementById("mySelect").form.id)
}
</script>
</head> <body> <form id="myForm"> <select id="mySelect"> <option>Apple</option> <option>Pear</option> <option>Banana</option> <option>Orange</option> </select> <input type="button" onclick="showFormId()" value="Show the form's id"> </form> </body> </html> |
Get the id of the form that contains the dropdown list
得到下拉列表的所在表单的id
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