Onchange jQuery Event for Dropdown

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I have a dropdown with 3 selectors. I wanted to show the content of each of the selector onchange. Can someone help?

Codeply: https://www.codeply.com/go/M5JCiCq2qo

function myFunction() {
  var x = document.getElementById("filter-extras").value;
  document.getElementById("extra-filter").innerHTML = "You selected: " +
    x;
}
<label class="col-md-12 pl-0">Select Type</label>
<select class="form-control custom-select mb-3 col-md-4" onchange="myFunction()" id="filter-extras">
  <option selected="selected" value="fuel">Fuel replacement</option>
  <option value="wifi">Portable WiFi hotspot</option>
  <option value="cleaning">Post-trip cleaning</option>
</select>

<div>Content for Fuel replacement</div>
<div>Content for Portable WiFi hotspot</div>
<div>Content for Post-trip cleaning</div>

I tried to make two versions with identical behavior and default content displayed. Here we simply check in forEach loop if id is equal to selected value:

document.getElementById('filter-extras').addEventListener('change', myFunction)

function myFunction() {
  var x = document.getElementById('filter-extras').value;
  document.querySelectorAll('.content').forEach(function(element) {
    if (element.getAttribute('id') === x) {
      element.style = 'display:block'
    } else {
      element.style = 'display:none'
    }
  });
}

myFunction()
<label class="col-md-12 pl-0">Select Type</label>
<select class="form-control custom-select mb-3 col-md-4" id="filter-extras">
  <option selected="selected" value="fuel">Fuel replacement</option>
  <option value="wifi">Portable WiFi hotspot</option>
  <option value="cleaning">Post-trip cleaning</option>
</select>

<div class="content" id="fuel">Content for Fuel replacement</div>
<div class="content" id="wifi">Content for Portable WiFi hotspot</div>
<div class="content" id="cleaning">Content for Post-trip cleaning</div>

How to get jQuery dropdown value onchange event, Try like this $("#drop").change(function () { var end = this.value; var firstDropVal = $('#pick').val(); });. In this post, we will see how to get selected value of dropdown in JavaScript and jQuery onchange event. 1. jQuery The idea is to bind the change event handler to the select box using.change(handler) method. Now an alert is displayed whenever an option is selected from the drop-down.


This can still be done quite easily with plain JS. You just need to add the change event handler to the select, then you can use the value chosen to select the content to show and hide all the others, something like this:

var content = document.querySelectorAll('.content');

document.querySelector('#filter-extras').addEventListener('change', function() {
  content.forEach(function(el) { el.style.display = 'none'; });
  document.querySelector('#' + this.value).style.display = 'block';
});
.content { 
  display: none;
}
<label class="col-md-12 pl-0">Select Type</label>
<select class="form-control custom-select mb-3 col-md-4" id="filter-extras">
  <option selected="selected" value="fuel">Fuel replacement</option>
  <option value="wifi">Portable WiFi hotspot</option>
  <option value="cleaning">Post-trip cleaning</option>
</select>

<div class="content" id="fuel">Content for Fuel replacement</div>
<div class="content" id="wifi">Content for Portable WiFi hotspot</div>
<div class="content" id="cleaning">Content for Post-trip cleaning</div>

jQuery change() Method, The change event occurs when the value of an element has been changed (only works on <input>, <textarea> and <select> elements). The change() method triggers the change event, or attaches a function to run when a change event occurs. Note: For select menus, the change event occurs when an option is selected. The HTML Select DropDownList has been assigned a jQuery OnChange event handler. When an item is selected in the HTML Select DropDownList, the jQuery OnChange event handler is executed within which the Text and Value of the selected item is fetched and displayed in JavaScript alert message box.


I think you already got your answer but if you want to show selected content by default on load then you should add this line to you code

// so in order to show the content of "Fuel replacement" as it is selected

$( function({
    const contentToShow = $('#filter-extras').val();
    $('#' + contentToShow).show();

   // after this you can add the code here
      $('#filter-extras').change(()=>{
        // show hide content here
      });
});

jQuery Select Drop Down On Change Event, This example explains how you can trigger events based on user input of a drop down using jQuery. Here's the entire page, I have 2 drop  The HTML Select DropDownList has been assigned a jQuery OnChange event handler. When an item is selected in the HTML Select DropDownList, the jQuery OnChange event handler is executed within which the Text and Value of the selected item is fetched and displayed in JavaScript alert message box.


jQuery Select Drop Down On Change Event, This example explains how you can trigger events based on user input of a drop down using jQuery. Heres the entire page, I have 2 drop  I have a drop down list. In Jquery what is the event I would use when the user makes a selection. The id of the dropdown is drp1 I tried the following but did not work: $("#ddrp1").SelectChanged


Get selected Text and Value of DropDownList in OnChange event , The HTML Select DropDownList has been assigned a jQuery OnChange event handler. When an item is selected in the HTML Select DropDownList, the jQuery​  The change event is sent to an element when its value changes. This event is limited to <input> elements, <textarea> boxes and <select> elements. For select boxes, checkboxes, and radio buttons, the event is fired immediately when the user makes a selection with the mouse, but for the other element types the event is deferred until the element


JQuery DropDown Change Event Example - JSFiddle, JavaScript + jQuery 1.11.0 Tidy. xxxxxxxxxx. 5. 1. $(document).ready(function(){. 2. $("#dropdown_change").change(function(){. 3. alert("Selected value is : " +  The onchange event occurs when the value of an element has been changed. For radiobuttons and checkboxes, the onchange event occurs when the checked state has been changed. Tip: This event is similar to the oninput event. The difference is that the oninput event occurs immediately after the value of an element has changed, while onchange occurs