jQuery显示/隐藏基于另一个下拉选项的下拉选项

I am trying to create a drop-down select menu that will consist of three select boxes, where the 3rd box will show/hide specific option based on an option selected in the 1st select box.

我正在尝试创建一个下拉选择菜单，其中包含三个选择框，其中第三个框将根据在第一个选择框中选择的选项显示/隐藏特定选项。

I was wondering if anyone here is be able to suggest a solution to this.

我想知道这里是否有人能够提出解决方案。

Here is a simplified version of the 3 select boxes I have:

这是我所拥有的3个选择框的简化版本：

<select class="product" id="select_1" name="product">
  <option selected="selected" value=""> Choose Category </option>
  <option value="Mens Suits"> Mens Suits </option>
  <option value="Womens Suit"> Womens Suits </option>
  <option value="Children Suit"> Children Suits </option>
</select>

<select class="color" id="select_2" name="color">
  <option selected="selected" value=""> Choose Color </option>
  <option value="Blue">Blue</option>
  <option value="Red">Red</option>
  <option value="Green">Green</option>
</select>

<select class="size" id="select_3" name="size">
  <option selected="selected" value=""> Choose Size </option>
  <!-- Mens Sizes Below -->
  <option value="36">36</option>
  <option value="38">38</option>
  <option value="40">40</option>
  <!-- Womens Sizes Below -->
  <option value="30">30</option>
  <option value="29">29</option>
  <option value="28">28</option>
  <!-- Children Sizes Below -->
  <option value="12">12</option>
  <option value="11">11</option>
  <option value="10">10</option>
</select>

With the example above, I would like to be able to view the first 3 options from the 3rd select box (36, 38, and 40) when the option Mens Suits from the 1st select box is chosen. Similarly, when the Womens Suits is selectedfrom the 1st box, the options 30, 29, and 28 should be visible in the 3rd box. The same with the Children Suits.

通过上面的示例，我希望能够在第一个选择框中选择Mens Suits选项时从第三个选择框（36,38和40）查看前3个选项。类似地，当从第一个框中选择女性套装时，选项30,29和28应该在第3个框中可见。与儿童套装相同。

I hope this makes sense. Thank you.

我希望这是有道理的。谢谢。

7 个解决方案

#1

Try:

尝试：

var men = '<option selected="selected" value=""> Choose Size </option><option value="36">36</option><option value="38">38</option><option value="40">40</option>';
var women = '<option selected="selected" value=""> Choose Size </option><option value="30">30</option><option value="29">29</option><option value="28">28</option>';
var children = '<option selected="selected" value=""> Choose Size </option><option value="12">12</option><option value="11">11</option><option value="10">10</option>';
$(document).ready(function(){
    $("select#select_1").on('change',function(){
        if($(this).val()=="Mens Suits"){
            $("select#select_3").html(men);
        }else if($(this).val()=="Womens Suit"){
            $("select#select_3").html(women);
        }else if($(this).val()=="Children Suit"){
            $("select#select_3").html(children);
        }
    });
});

DEMO FIDDLE

DEMO FIDDLE

#2

I tried in many different ways but this solution seems reasonable and I have used in my code. No plugins required simple register function with jquery object

我试过很多不同的方法，但这个解决方案似乎很合理，我在我的代码中使用过。没有插件需要使用jquery对象的简单注册函数

Solution at glance:

解决方案一览：

(function ($) {


$('#showOne').click(function () {
    $('#ddlNumbers').showHideDropdownOptions('3', true);
});

$('#hideOne').click(function () {
    $('#ddlNumbers').showHideDropdownOptions('3', false);
});

 $.fn.showHideDropdownOptions = function(value, canShowOption) { 

         $(this).find('option[value="' + value + '"]').map(function () {
            return $(this).parent('span').length === 0 ? this : null;
        }).wrap('<span>').hide();

        if (canShowOption) 
            $(this).find('option[value="' + value + '"]').unwrap().show();
        else 
            $(this).find('option[value="' + value + '"]').hide();

}



})(jQuery);

Here is the complete implementation http://jsfiddle.net/8uxD7/3/

这是完整的实现http://jsfiddle.net/8uxD7/3/

#3

Updated the 3rd select

更新了第3个选择

<select class="size" id="select_3" name="size">
  <option selected="selected" value=""> Choose Size </option>
  <!-- Mens Sizes Below -->
  <option class="men" value="36">36</option>
  <option class="men" value="38">38</option>
  <option class="men" value="40">40</option>
  <!-- Womens Sizes Below -->
  <option class="women" value="30">30</option>
  <option class="women" value="29">29</option>
  <option class="women" value="28">28</option>
  <!-- Children Sizes Below -->
  <option class="children" value="12">12</option>
  <option class="children" value="11">11</option>
  <option class="children" value="10">10</option>
</select>

jquery code.

jquery代码。

$("#select_1").change(function(){
     var selectedVal = $(this).val();

    if(selectedVal == "Mens Suits")
    {
     $(".women,.children").hide();
     $(".men").show();
    }
    else if(selectedVal == "Womens Suit")
    {
     $(".men,.children").hide();
     $(".women").show();
    }
    else
    {
     $(".women,.children").hide();
     $(".children").show();
    }
  });

#4

There are several ways you can achieve that. From your example i can see that you only require 2 out of the 3 dropdown options to be filtering. Is this correct?

有几种方法可以实现这一目标。从您的示例中我可以看到您只需要3个下拉选项中的2个进行过滤。它是否正确？

Please have a look HERE as it will cover many more scenarios that just the one you are mentioning.

请看一下这里，因为它将涵盖更多您提到的场景。

An example with 3 dropdown options that filter each other: EXAMPLE

一个包含3个下拉选项的示例，它们相互过滤：示例

Hope this helps

#5

Use selectedIndex property to hide show third selection box

使用selectedIndex属性隐藏显示第三个选择框

    $("#select_1").on('change',function(){
    if($("#select_1").prop("selectedIndex")==1){
        $('#select_3 option').show(); 
        $('#select_3 option:gt(3)').hide(); 
        //$('#select_3 option:lt(3)').show();
    }else if($("#select_1").prop("selectedIndex")==2){
     $('#select_3 option').show(); 
     $('#select_3 option:lt(4)').hide();   
     $('#select_3 option:gt(6)').hide();   
    }else if($("#select_1").prop("selectedIndex")==3){
     $('#select_3 option').show(); 
     $('#select_3 option:lt(7)').hide();   
    }
});

Demo

演示

#6

Try this:

尝试这个：

Html:

HTML：

<select class="product" id="select_1" name="product">
  <option selected="selected" value=""> Choose Category </option>
  <option value="Mens Suits"> Mens Suits </option>
  <option value="Womens Suit"> Womens Suits </option>
  <option value="Children Suit"> Children Suits </option>
</select>

<select class="color" id="select_2" name="color">
  <option selected="selected" value=""> Choose Color </option>
  <option value="Blue">Blue</option>
  <option value="Red">Red</option>
  <option value="Green">Green</option>
</select>

<select class="size" id="select_3" name="size">
  <option selected="selected" value=""> Choose Size </option>
  <!-- Mens Sizes Below -->
  <option value="Mens_36">36</option>
  <option value="Mens_38">38</option>
  <option value="Mens_40">40</option>
  <!-- Womens Sizes Below -->
  <option value="Womens_30">30</option>
  <option value="Womens_29">29</option>
  <option value="Womens_28">28</option>
  <!-- Children Sizes Below -->
  <option value="Children_12">12</option>
  <option value="Children_11">11</option>
  <option value="Children_10">10</option>
</select>

JQuery:

JQuery的：

 $(document).ready(function() {
    $("#select_3").children('option:gt(0)').hide();
    $("#select_1").change(function() {
        $("#select_3").children('option').hide();
        $("#select_3").children("option[value^=" + $(this).val().split(" ")[0] + "]").show()
    })
})

Working Fiddle

工作小提琴

#7

You can use css classes to distinguish the Sizes and show hide the options based on the category.

您可以使用css类来区分大小，并显示基于类别隐藏选项。

    <select class="product" id="select_1" name="product">
        <option selected="selected" value="">Choose Category </option>
        <option value="Mens Suits">Mens Suits </option>
        <option value="Womens Suit">Womens Suits </option>
        <option value="Children Suit">Children Suits </option>
    </select>
    <select class="color" id="select_2" name="color">
        <option selected="selected" value="">Choose Color </option>
        <option value="Blue">Blue</option>
        <option value="Red">Red</option>
        <option value="Green">Green</option>
    </select>
    <select class="size" id="select_3" name="size">
        <option selected="selected" value="">Choose Size </option>
        <!-- Mens Sizes Below -->
        <option value="36" class="men">36</option>
        <option value="38" class="men">38</option>
        <option value="40" class="men">40</option>
        <!-- Womens Sizes Below -->
        <option value="30" class ="women">30</option>
        <option value="29" class ="women">29</option>
        <option value="28" class ="women">28</option>
        <!-- Children Sizes Below -->
        <option value="12" class ="child">12</option>
        <option value="11" class ="child">11</option>
        <option value="10" class ="child">10</option>
    </select>

The above code having classes like "men", "women" and "child"` to distinguish the sizes.

上面的代码有类似“男人”，“女人”和“孩子”的类来区分大小。

Following script can be used to achieve the functionality.

以下脚本可用于实现功能。

  <script>
        $(document).ready(function () {
            $("select#select_1").on('change', function () {
               if ($(this).val() == "Mens Suits") {
               // Default show the Choose Size Option
                $('#select_3 option:first').attr('selected', 'selected'); 
                $(".men").show();
                $(".women").hide();
                $(".child").hide();
               } else if ($(this).val() == "Womens Suit") {
                $('#select_3 option:first').attr('selected', 'selected');
                $(".women").show();
                $(".men").hide();
                $(".child").hide();
               } else if ($(this).val() == "Children Suit") {
                $('#select_3 option:first').attr('selected', 'selected');
                $(".child").show();
                $(".women").hide();
                $(".men").hide();
               }
            });
        });
    </script>

Hope this will help :)

希望这会有所帮助:)