Modify styling of elements dynamically according to URL changes repeatedly without refreshing the page (requires AJAX functionality)

In my effort to introduce conditionality into the "Search Filters Section" of a Wordpress theme, I am facing some challenges due to the unconventional selectors I have to work with.

Within this section, there is a dropdown menu featuring various options (taxonomies referred to as "tipo-de-montaje" or in English, "types-of-seating"), and it is necessary for specific elements to appear based on the selected dropdown value.

The issue arises when trying to switch between different options in the dropdown. It seems that the functionality works only once, requiring a page reload to properly hide the current element and display the new one.

My primary question is whether AJAX is an absolute necessity in this scenario?

Here is my second attempt at resolving the issue:

//Retrieve the value of the selected option from the dropdown
var montajeVal = $('input[name="tipos-de-montaje"]').val();
//Containers of the elements to be shown or hidden
const escuelaMax = $('[data-name="max-capacidad-escuela"]').parent();
const auditorioMax = $('[data-name="max-capacidad-auditorio"]').parent();
//Initially hide these containers  
escuelaMax.hide();
auditorioMax.hide();
//Show the appropriate container based on the selected value
if (montajeVal == "escuela") {
        escuelaMax.show();
        auditorioMax.hide();
} else if (montajeVal == "auditorio")  {
        escuelaMax.hide();
        auditorioMax.show();
}
//This implementation only works once :(

//Consider using a JSON data structure containing values to compare $montajeVal with, iterate through them in a loop to achieve the desired outcome instead of relying solely on IF statements
// The JSON could simply be: ['escuela', 'auditorio']
// Although I've used just two values for simplicity, the actual list is more extensive.

Answer №1

When it comes to dynamic loading, the key component you need is AJAX, as you mentioned. To successfully implement AJAX, you require the following: 1. JavaScript code that triggers the AJAX call on the frontend by preparing and sending the request.

  1. Server-side code that manages the incoming request (receives, authenticates, validates, prepares data, and sends it back to the frontend).

  2. Frontend code that handles the dynamically received data.

In this snippet, I won't be able to provide actual server-related code due to insufficient information about your server setup. However, I can demonstrate points 1 and 2 by simulating sample data and functionality.

jQuery(document).ready(function($) {
  $('.load-data').on('click', async function() {
    const type = $(this).attr('data-name')
    const capacity = await getCapacity(type)
    toggleDisplay(type, capacity.length)
  })
});

function getCapacity(type) {
  return new Promise((resolve, reject) => {
    fetch(`https://jsonplaceholder.typicode.com/${type}`)
      .then(response => response.json())
      .then(json => resolve(json))
  })
}

function toggleDisplay(type, capacity) {
  if (type === 'posts') {
    jQuery('#theater-container').show()
    jQuery('#banquet-container').hide()
    jQuery('#theater-container').find('[data-name="theater-capacity"]').text(capacity)
  } else {
    jQuery('#theater-container').hide()
    jQuery('#banquet-container').show()
    jQuery('#banquet-container').find('[data-name="banquet-capacity"]').text(capacity)
  }
}
[id*="container"] {
  display: none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button class="load-data" data-name="posts">Theaters</button><br />
<button class="load-data" data-name="users">Banquets</button>
<div id="theater-container">
  <h2>Theater capacity</h2>
  <div data-name="theater-capacity"></div>
</div>

<div id="banquet-container">
  <h2>Banquet capacity</h2>
  <div data-name="banquet-capacity"></div>
</div>

This demonstration serves to illustrate the solution process, but keep in mind that the implementation may vary based on your specific data source. One notable distinction is the data loading trigger being tied to a click event here compared to your data loading trigger on URL change. It seems like you already have a grasp of this difference.

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