单击按钮后如何使下拉列表可见

I am a beginner, Hope one can help me with my problem, I want to make a drop down list visible once I click the button, It completely like the thing that has been done here: https://shop.adidas.co.in/#category/Pag-60/No-0/0/All/facet.DIVISION_CATEGORY_ss:%28%22FOOTWEAR%22%29%20AND%20allBrands_ss:%28%22ORIGINALS%22%29

我是初学者,希望我可以帮助解决我的问题,我想在点击按钮后看到一个下拉列表,它完全像在这里完成的事情:https://shop.adidas.co。在/#类别/帕格-60 /无0/0 /全部/ facet.DIVISION_CATEGORY_ss:%28%22FOOTWEAR%22%29%20个于是%20allBrands_ss:%28%22ORIGINALS%22%29

when the customer clicks on Buy button then a drop-down list appear above of the buy button,I think this example in the mentioned website is clear enough,

当客户点击“购买”按钮,然后在购买按钮上方出现一个下拉列表,我认为这个例子在上述网站中已经足够清楚,

EDITION

as the code shows, when I click on BUY button it opens up a new link, I'm not wanna to do this, at first when someone click the button it has to not work and just show the drop-down list, secondly, when the user chooses a size from the drop-down list and then click on the button it has to work and open the link,

正如代码所示,当我点击“购买”按钮时,它会打开一个新链接,我不想这样做,首先当有人点击按钮它不能工作时,只显示下拉列表,其次,当用户从下拉列表中选择一个大小,然后单击它必须工作的按钮并打开链接,

it is exactly what happen in the above link that I have introduced. my stuff:

这正是我所介绍的上述链接中发生的事情。我的东西:

<button name="buySize" id="buySize" type="button" class="btn btn-success btn-sm" onclick="location.href='@Url.Action("AddToCart", "ShoppingCart", new { Barcode = @item.Barcode },"")'">
    خرید &raquo;
</button>
<div class="pull-left">
    <label class="control-label" id="drpSize">سایز:</label>
    <div class="product-quantity" id="drpSize" >
        @Html.DropDownListFor(model => model.CartItems[0].Size, new SelectList(Model.Sizes))
    </div>
</div>

this was my drop-down list and button and also javascript :`

这是我的下拉列表和按钮,还有javascript:`

$('#buySize').click(function () {
    if (this.click())
        $('#drpSize').show("fast");
    else
        $('#drpSize').hide("fast");
});

every help is appreciating :),

每一个帮助都是欣赏:),

2 个解决方案

#1

You can put drop down list hidden by default using style attribute in drop down div as

默认情况下,您可以使用下拉div中的样式属性隐藏下拉列表

style="display:none"

on click of button you can show the drop down list. For this code will be as follow:

点击按钮,您可以显示下拉列表。对于此代码将如下:

CSHTML

EDIT: You achieve required functionality First remove onclick event from button control.

编辑:您实现所需的功能首先从按钮控件中删除onclick事件。

 <button name="buySize" id="buySize" type="button" class="btn btn-success btn-sm">
  خرید &raquo;</button>
   <div class="pull-left">
     <label class="control-label" id="drpSize">سایز:</label>
      <div class="product-quantity" id="drpSize" style="display:none" >
       @Html.DropDownListFor(model => model.CartItems[0].Size, new SelectList(Model.Sizes))                                                              </div>
    </div>

in js file

在js文件中

 $('#buySize').click(function () {
           $('#drpSize').css('display','block'); 
        });

EDIT: alternately if want to show drop down with animated effect and want to open BUY link after size selection use this script.

编辑:如果想要显示带有动画效果的下拉菜单并且想要在大小选择后打开“购买”链接,请使用此脚本。

 $('#buySize').click(function () {
   $('#drpSize').show('fast');
var val= $('#dropDownId :selected').text();
if(val!='Select'){
location.href= //which ever link you want to open put here
}
 });

#2

Try this :

试试这个 :

Your dropdown is initially hide by the css ie. display:none

你的下拉列表最初是由css隐藏的。显示:无

Jquery code to show it when user click on buy button:

用户点击“购买”按钮时显示的Jquery代码:

$('#buySize').click(function () {
   $('#dropdown_id').show();
});

#1