jQuery 获取上一个选择的下拉项
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get previous selected dropdown item
提问by leora
i have the following code where i have a dropdown list (with class="addToList" and followed by a button (Class="addtoButton"):
我有以下代码,其中有一个下拉列表(带有 class=" addToList",后跟一个按钮(Class=" addtoButton"):
When i click on the button, i want to grab the current selected value and text from the previous dropdown list.
当我单击按钮时,我想从上一个下拉列表中获取当前选定的值和文本。
$(".addToPortalButton").live('click', function (e) {
// grab the previous dropdown list value and text here.
});
what is the easiest way to doing this using jquery.
使用 jquery 执行此操作的最简单方法是什么。
Here is the html:
这是html:
<select class="addToList" id="Teams" name="Teams">
<option></option>
<option value="49">Team 1</option>
<option value="22">Team 2</option>
</select>
<input type='button' class="addToButton" value='Add to' />
<select class="addToList" id="Teams" name="Teams">
<option></option>
<option value="49">Team 1</option>
<option value="22">Team 2</option>
</select>
<input type='button' class="addToButton" value='Add to' />
<select class="addToList" id="Teams" name="Teams">
<option></option>
<option value="49">Team 1</option>
<option value="22">Team 2</option>
</select>
<input type='button' class="addToButton" value='Add to' />
采纳答案by Nick Craver
You can use .prev()
or .prevAll()
to get the <select>
before like this:
您可以使用.prev()
或.prevAll()
来获得这样的<select>
before :
Edit:for newer versions of jQuery where .live()
has been deprecated, the new .on()
syntax is:
编辑:对于.live()
已弃用的较新版本的 jQuery ,新.on()
语法为:
$(document).on('click', '.addToButton', function (e) {
var sel = $(this).prevAll('.addToList:first'),
val = sel.val(),
text = sel.find(':selected').text();
});
Older version:
旧版本:
$(".addToButton").live('click', function (e) {
var sel = $(this).prevAll(".addToList:first"),
val = sel.val(),
text = sel.find(':selected').text();
});
回答by lonesomeday
You can do this with the following code:
您可以使用以下代码执行此操作:
$(".addToButton").on('click', function (e) {
var $el = $(this).prev().find('option:selected');
});
You can then use $el.val()
and $el.text()
to get the value and text respectively.
然后$el.val()
,您可以使用和$el.text()
分别获取值和文本。