使用 jQuery 获取组合框的选定键/值
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Get selected key/value of a combo box using jQuery
提问by Amit
Please, how can I get the selected key and value of a HTML select combo box using jQuery?
请问,如何使用 jQuery 获取 HTML 选择组合框的选定键和值?
$(this).find("select").each(function () {
if ($.trim($(this).val()) != '') {
searchString += $.trim($(this).val()) + " "; //This gives me the key. How can I get the value also?
}
});
Thanks
谢谢
回答by David Tang
I assume by "key" and "value" you mean:
我假设“键”和“值”是指:
<select>
<option value="KEY">VALUE</option>
</select>
If that's the case, this will get you the "VALUE":
如果是这种情况,这将为您提供“VALUE”:
$(this).find('option:selected').text();
And you can get the "KEY" like this:
你可以像这样得到“KEY”:
$(this).find('option:selected').val();
回答by Anand Thangappan
This works:
这有效:
<select name="foo" id="foo">
<option value="1">a</option>
<option value="2">b</option>
<option value="3">c</option>
</select>
<input type="button" id="button" value="Button" />
$('#button').click(function() {
alert($('#foo option:selected').text());
alert($('#foo option:selected').val());
});
回答by Alborz
<select name="foo" id="foo">
<option value="1">a</option>
<option value="2">b</option>
<option value="3">c</option>
</select>
<input type="button" id="button" value="Button" />
});
<script> ("#foo").val() </script>
which returns 1 if you have selected a and so on..
如果您选择了一个等等,它会返回 1..
回答by Calum
$(this).find("select").each(function () {
$(this).find('option:selected').text();
});
回答by Laxman G
$("#elementName option").text();
This will give selected text of Combo-Box.
这将给出组合框的选定文本。
$("#elementName option").val();
This will give selected value associated selected item in Combo-Box.
这将在组合框中给出与选定项目相关联的选定值。
$("#elementName option").length;
It will give the multi-select combobox values in the array and length will give number of element of the array.
它将给出数组中的多选组合框值,长度将给出数组元素的数量。
Note:#elementNameis id the Combo-box.
注意:#elementName是组合框的 ID。