[英]More than one dropdown for same functionality on same page
My question is how can I display more than one drop downs on same page for same functionality in C#. 我的问题是,如何在同一页面上为C#中的相同功能显示多个下拉菜单。 Let's say I have 3 panels on a page, I want to show a drop down in all three panels but changing the value of one drop down will cause changing the values of others too.
假设我在一个页面上有3个面板,我想在所有这三个面板中显示一个下拉菜单,但是更改一个下拉菜单的值也会导致更改其他下拉菜单的值。 I can't use id access in JS because if there are 3 drop downs on same page of same ID ie ID is not unique then Java Script can't perform actions.
我无法在JS中使用id访问,因为如果在同一ID的同一页面上有3个下拉列表,即ID不是唯一的,则Java Script无法执行操作。
Just apply same class to all dropdowns and on change of any of dropdown set that value to all dropdowns please find snippet below. 只需将相同的类应用于所有下拉菜单,并且在更改所有下拉菜单的值后,请在下面找到代码段。
$(".selectclass").on("change",function(){ $(".selectclass").val($(this).val()); });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <select class="selectclass"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="mercedes">Mercedes</option> <option value="audi">Audi</option> </select> <select class="selectclass"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="mercedes">Mercedes</option> <option value="audi">Audi</option> </select> <select class="selectclass"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="mercedes">Mercedes</option> <option value="audi">Audi</option> </select>
You can assign different Class all three dropdown and call change event 您可以为所有三个下拉菜单和通话更改事件分配不同的类别
<select id="ddlUnquie" class="one" >
<option value="firstvalue">first dropdown text</option>
<option value="firstsecond">first second text</option>
</select>
<br>
<br>
<select id="ddlUnquie" class="two" >
<option value="firstvalue">first dropdown text</option>
<option value="firstsecond">first second text</option>
</select>
<br>
<br>
<select id="ddlUnquie" class="three" >
<option value="firstvalue">first dropdown text</option>
<option value="firstsecond">first second text</option>
</select>
Below is Jquery code 下面是jQuery代码
$(".one").change(function()
{
alert($(this).val());
})
$(".two").change(function()
{
alert($(this).val());
})
$(".three").change(function()
{
alert($(this).val());
})
Also you can use jsfillde link https://jsfiddle.net/1xzkmbtk/ 您也可以使用jsfillde链接https://jsfiddle.net/1xzkmbtk/
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