The implementation of jQuery show/hide functionality for a div based on select change is not functioning properly when the

Currently, I am streamlining an HTML web form by using scripts to populate select box options. While the show/hide functionality works perfectly for one select with hardcoded options, it fails for a dropdown filled via script and JSON data. Can anyone pinpoint where I might be going wrong?

JS Fiddle

If "member + 1 guest" is selected, one div displays correctly. However, the other dropdown never triggers the display of the second div!

Check out the HTML snippet below:

<div id="tickets">
  <label for="group1">Number of Tickets: <span class="req">*</span></label>
  <select class="group1_dropdown" id="group1" name="group1">
   <option value="0">-- Please select --</option>
   <option value="1">Member</option>
   <option value="2">Member + 1 Guest</option>
   <option value="3">Member + 2 Guests</option>
   <option value="4">Member + 3 Guests</option>
  </select>
 <label class="visuallyhidden">Year</label>
 <select id="yearSelectionBox2" class="stringInfoSpacing">
  <option value="0" selected="selected">Year</option>
 </select>
</div>
<div id="payMethod">
  <div class="header"> PAYMENT METHOD </div>
   <div id="payOptions">
    <div id="payInfo">
    <div id="pay0" class="paymentinfo">
    <p>PAYMENT INFO OPTION 1</p>
  </div>
    </div>
  </div>
 </div>
<div id="pay222" class="tacos">
  <p>Years Data</p>
 </div>

Below are the scripts being utilized:

 var YearListItems2= "";
for (var i = 0; i < modelYearJsonList2.modelYearTable2.length; i++){
YearListItems2+= "<option value='" + modelYearJsonList2.modelYearTable2[i].modelYearID + "'>" + modelYearJsonList2.modelYearTable2[i].modelYear + "</option>";
  };
    $("#yearSelectionBox2").html(YearListItems2); 
     //The div is not showing/hiding as it should 
     $("#yearSelectionBox2").change(function () {
      var str = "";
      str = parseInt($("select option:selected").val());       
     if(str == 2013)
     $("#pay222").show('slow');
      else
         $("#pay222").hide('fast');
 });
 //This one works as it should
  $("#group1").change(function () {
   var str = "";
  str = parseInt($("select option:selected").val());       
   if(str == 2)
     $("#payMethod").show('slow');
     else
      $("#payMethod").hide('fast');
 });
javascriptjqueryhtmlcssjson

Answer №1

The change event handlers for your select element selector need to be corrected. Use this to refer to the select element that was changed instead of using another selector.

$("#yearSelectionBox2").change(function () {
    var str = parseInt($(this).val());
    if (str == 2013) {
        $("#pay222").show('slow');
    } else {
        $("#pay222").hide('fast');
    }
});

Instead of using $("select option:selected") to get the selected value, use $(this).value() as it will return the value of the current select element.

It's important to note that the same mistake exists in the group1 handler as well. It may appear to be working now because it is the first select element on the page, but adding a new select element before it could cause it to fail.

Answer №2

It seems like there is an issue with your select element selector. You should consider using either $(this) or the specific select element id (since ids are meant to be unique).

$("#yearSelectionBox2").change(function () {
    var str = "";
    str = parseInt($(this).val());        
     if(str == 2013)
         $("#pay222").show('slow');
      else
          $("#pay222").hide('fast');
});

Check out the DEMO here

Alternatively, you can also use:

$("#yearSelectionBox2").change(function () {
    var str = "";
    str = parseInt($("select#yearSelectionBox2 option:selected").val());        
     if(str == 2013)
         $("#pay222").show('slow');
      else
          $("#pay222").hide('fast');
});

Another version of the DEMO is available here

Answer №3

To make the necessary adjustment in your code, simply update the following line:

Instead of:

str = parseInt($("select option:selected").val());

Use:

str = parseInt($("select#yearSelectionBox2 option:selected").val());

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