Is it necessary for me to replicate this function? - jQuery

I have developed a function that creates a transparent information overlay on a current div for a mobile web app.

Context: I am using jQTouch, which means I have separate divs instead of loading individual pages anew.

$(document).ready(function() { 
    $('.infoBtn').click(function() {
        $('#overlay').toggleFade(400);
        return false;    
     });
 });

When I click the button on the first div, the function works fine as JavaScript runs sequentially. However, when I navigate to the next div and click the same button, nothing seems to happen. The function does get triggered when I go back to the first div, though.

As a workaround, I ended up duplicating the function and changing the CSS selector names, which solves the issue for both divs.

But is there a more efficient way to achieve this without duplicating the function for each use case? Is it possible to use the same selectors but load different content in each variation?

Answer №1

Do you think this method would be effective? My assumption is that you are looking to have various buttons trigger the toggleFade function on different overlay elements.

function createOverlayToggle(selector) {
    return function() {
        $(selector).toggleFade(400);
        return false;
    }
}

$('button selector').click(createOverlayToggle('#overlay1'));
$('another button selector').click(createOverlayToggle('#overlay2'));

Another option is to modify the createOverlayToggle function to accept a jQuery object as the selector parameter and use it like so:

createOverlayToggle($('#overlay1'))
.

Answer №2

To achieve this in the best way possible, it is recommended to keep it all relative. For example, if you have HTML markup like this:

<div class="container">
  <div class="overlay">Overlay content</div>
  <button class="infoBtn">Click to show overlay</button>
</div>

You can then easily target the overlay for the specific button relatively, as shown below:

$(function() { //equivalent to $(document).ready(function() {
  $('.infoBtn').click(function() {
    $(this).closest('.container').find('.overlay').toggleFade(400);
    return false;
  });
});

To further optimize this, you can use .children('.overlay') if the overlay is always a direct child of the container. This script starts from the current button (this), locates the .container it belongs to with .closest(), and then finds the .overlay within it using .find(). By following this approach, you can manage all your event bindings with minimal code, making maintenance much easier :)

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