CODEWITHSUNDEEP
javascriptjqueryhtmlcss
NathanB
NathanB

Reputation: 105

Show/Hide based on dropdown option

I'm using Jquery to show/hide divs based on what a user selects in a dropdown.

My HTML:

<select>
   <option value='test'>Test</option>
   <option value='example'>Example</option>
   <option value='blah'>Blah</option>
</select>
<div data-show="blah">Should be shown when blah</div>
<div data-hide="example">Should be hidden when example</div>

My Jquery (in coffeescript):

$("select").on "change", () ->
  shows = $('[data-show="' + $(this).val() + '"]')
  hides = $('[data-hides="' + $(this).val() + '"]')

  shows.show()
  hides.hides()

This works when a user chooses the right option, say Example. But when a user goes back to say Test, it should go back to the default. How do I get this to work?

Upvotes: 0

Views: 3010

Answers (6)

Gobinda Nandi
Gobinda Nandi

Reputation: 515

<select class="selectBoxClass">
    <option value='test'>Test</option>
    <option value='example'>Example</option>
    <option value='blah'>Blah</option>
</select>
<div data-show="blah" class="all ">Should be shown when blah</div>
<div data-hide="example" class="all">Should be hidden when example</div>

<script>
    $(document).on('change', '.selectBoxClass', function(event) {
        event.preventDefault();
        $('div.all').show();
        shows = $('[data-show="' + $(this).val() + '"]')
        hides = $('[data-hides="' + $(this).val() + '"]')
        shows.show()
        hides.hides()
    });

</script>

**if your previous code is not working well, then you can try this.

Upvotes: 0

hackernewbie
hackernewbie

Reputation: 1712

Let's assume you assume a set of divs, some of which you wish to show/hide based on what you select in a dropdown list, in jQuery.

This is how it can be achieved.

The grid

<div class="row exhbitors-grid-row">
                            
    <div class="col-lg-6 col-md-6 exhibitor-grid-item" style="">
        <div class="exhibitor-grid-large wow pixFadeRight" data-wow-delay="0.5s" style="visibility: visible; animation-delay: 0.5s; animation-name: pixFadeRight;">
            <div class="member-avater">
                <img src="#" alt="">
            </div>
            <div class="listing-page-exhibitor-brief wow pixFadeUp" style="visibility: visible; animation-name: pixFadeUp;">
                <div class="exhibitor-details">
                    <input type="hidden" name="industry" class="industry Accommodation" value="Accommodation">
                    <h4 class="grid-exhibitor-title">Tourist Board</h4>
                    <strong class="grid-exhibitor-copy">Manning the Booth</strong>
                    <div class="grid-item-host">
                        <span>User</span>
                        <a href="bcard.pdf" target="_blank" title="Download business card"><i class="fa fa-address-card b-card-file" aria-hidden="true"></i>
                        </a> 
                    </div>
                </div>
            </div>
        </div>
    </div>
                
    <div class="col-lg-6 col-md-6 exhibitor-grid-item" style="">
        <div class="exhibitor-grid-large wow pixFadeRight" data-wow-delay="0.5s" style="visibility: visible; animation-delay: 0.5s; animation-name: pixFadeRight;">
            <div class="member-avater">
                <img src="#" alt="">
            </div>
            <div class="listing-page-exhibitor-brief wow pixFadeUp" style="visibility: visible; animation-name: pixFadeUp;">
                <div class="exhibitor-details">
                    <input type="hidden" name="industry" class="industry Airline" value="Airline">
                    <h4 class="grid-exhibitor-title">Tourist Board</h4>
                    <strong class="grid-exhibitor-copy">Manning the Booth</strong>
                    <div class="grid-item-host">
                        <span>User</span>
                        <a href="bcard.pdf" target="_blank" title="Download business card"><i class="fa fa-address-card b-card-file" aria-hidden="true"></i>
                        </a> 
                    </div>
                </div>
            </div>
        </div>
    </div>
    ...
    ...
    ...
    
</div>

Somewhere on the page,you have a dropdown list which looks like this:

<select class="category-select" name="category-select" id="category-select">
    <option value="-1">Industry </option>
    <option value="1">Accommodation</option>
    <option value="2">Airline</option>
    <option value="3">Car Rentals</option>
    <option value="4">City Tourist Board</option>
    ...
    ...
    ...
</select>

On change of this dropdown list, we only want to show the div that has a hidden field value value same as the selected dropdown item. Check the hidden field values above in the div.

We need a small bit of jQuery to do the magic. This is how it will look:

$(document).ready(function(){
if($(".category-select")){
$(".category-select").change(function(){
    $(".exhibitor-grid-item").show();
    var selectedIndustry = $(".category-select option:selected").text();
    $(".exhibitor-grid-item").each(function(){
        var $itemIndustry = $(this).find(".industry").val();
        if($(".category-select option:selected").val() > -1){
          if(selectedIndustry != $itemIndustry){
            $(this).find(".industry").parent().parent().parent().parent().hide();
          }
        }
     });
   });
 }
});

Upvotes: 0

SirPilan
SirPilan

Reputation: 4837

I dont know what you are up to but this is the described behavior, probably not the desired :D

$('select').on('change', (e) => {
  // apply defaults, then filter // credits to filter @charlietfl
  $('[data-show]').hide().filter('[data-show=' + $(e.target).val() + ']').show();
  $('[data-hide]').show().filter('[data-hide=' + $(e.target).val() + ']').hide();
}).change();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
   <option value='test'>Test</option>
   <option value='example'>Example</option>
   <option value='blah'>Blah</option>
</select>
<div data-show="blah">Should be shown when blah</div>
<div data-hide="example">Should be hidden when example</div>

EDIT added default hide/show

Upvotes: 1

Rick
Rick

Reputation: 4126

Create a selection of your elements you want to show/hide:

var elements = $('[data-show], [data-hide]');

Then you can use jQuery's .filter function to show only the selected element:

var elements = $('[data-show], [data-hide]');    

function showElement(option) {  
  var filter;  
  
  // hide all elements befor filtering
  elements.hide();
  
  // create the filter value, which will be used for filtering
  switch (option) {
    case 'test':
      filter = '[data-hide="example"]';
      console.log('show only example');
      break;
    
    case 'blah':
      filter = '*';
      console.log('show all elements');
      break;
      
    default:
      console.log('hide all elements (including example)');
      break;
  }  
  
  if (filter) {
    elements.filter(filter).show(); 
  }
}

showElement('test');

$("select").on("change", function() {
  showElement($(this).val());  
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
  <option value='test'>Test</option>
  <option value='example'>Example</option>
  <option value='blah'>Blah</option>
</select>
<div data-show="blah">Should be shown when blah</div>
<div data-hide="example">Should be hidden when example</div>

Also you had several typos:

  • When you select the element via data-hide, there's an additional s (hides):

    hides = $('[data-hides="' + $(this).val() + '"]')

  • When you want to hide hides via calling .hides(), jQuery only has a .hide() function to hide an element:

    hides.hides()

Upvotes: 0

jvk
jvk

Reputation: 2201

$(function(){
            $('div').hide();
            $('select').change(function(){
                if($(this).val()=='blah'){
                  $('div[data-show]').show();
                  $('div[data-hide]').hide();

                }else if($(this).val()=='example'){
                  $('div[data-hide]').show();
                  $('div[data-show]').hide();
                }else{
                  $('div[data-hide]').hide();
                  $('div[data-show]').hide();
                }
            })
        })   
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
 <select>
   <option value='test'>Test</option>
   <option value='example'>Example</option>
   <option value='blah'>Blah</option>
</select>
<div data-show="blah">Should be shown when blah</div>
<div data-hide="example">Should be hidden when example</div>

Upvotes: 0

charlietfl
charlietfl

Reputation: 171679

Can use filter() to set final display and do opposite on whole group before the filter

$("select").on("change", function(){
  var value = this.value
  // hide all data-show
  $('[data-show]').hide().filter(function(){
     return $(this).data('show') === value;
  }).show()// only show matching ones
  
 $('[data-hide]').show().filter(function(){
     return $(this).data('hide') === value;
  }).hide()

}).change()
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
   <option value='test'>Test</option>
   <option value='example'>Example</option>
   <option value='blah'>Blah</option>
</select>
<div data-show="blah">Should be shown when blah</div>
<div data-hide="example">Should be hidden when example</div>

Upvotes: 3

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