Favouriting a Custom Post Type

So I’ve built this theme so the client can add Properties to their WordPress website.

Within this theme I’ve built a favouriting system but I seem to be having a problem with making the favourite button work on the Custom Post Type list page.

The Problem:
Every time I hit the favourite button it will always favourite the first post in the list and not the one I clicked. Image Explain below:

In this Image it displays 3 of the Properties side by side with the star icon being the favourite button.

In this Image the first star is gone but I clicked the star on the far right Property.

My only thought is that in the jQuery I am not finding that Property ID and just finding an <i> element and hiding it.

The jQuery code:

$('a#add-to-favorite').click(function(eve){
    eve.preventDefault();
    eve.stopPropagation();
    var $star = $(this).find('i');
    var add_to_fav_options = {
        target:        ('#fav-target'),   // target element(s) to be updated with server response
        beforeSubmit:  function(){
            $star.addClass('fa-spin');
        },  // pre-submit callback
        success: function(){
            $star.removeClass('fa-spin');
            $('#add-to-favorite').hide(0,function(){
                $(this).find('#fav-output').delay(200).show();
            });
        }
    };

    $('#add-to-favorite-form').ajaxSubmit( add_to_fav_options );
});

The favourite code:

<span class="add-to-fav">
    <?php
    $property_id = get_the_ID();
    if(is_added_to_favorite($property_id)) {
        ?>
        <div id="fav-output" class="show">
            <i class="fa fa-star"></i>&nbsp;
            <span id="fav-target">Added to Favourites</span>
        </div>
        <?php
    } else {
        ?>
        <form action="<?php echo admin_url('admin-ajax.php'); ?>" method="post" id="add-to-favorite-form">
            <input type="hidden" name="property_id" value="<?php echo $property_id; ?>">
            <input type="hidden" name="action" value="add_to_favorite">
        </form>
        <div id="fav-output">
            <i class="fa fa-star"></i>&nbsp;
            <span id="fav-target">Added To Favourites</span>
            <span id="property-target-<?php echo $property_id; ?>" data-property-id="<?php echo $property_id; ?>"></span>
        </div>
        <a href="#add-to-favorite" id="add-to-favorite">
            <i class="fa fa-star-o"></i>&nbsp;
            <span class="add-to">Add to Favourites</span>
        </a>
        <?php
    }
    ?>
</span>

You should not be using element IDs more than once, instead you should be using classes.

Without going into to much detail try the adjustments below…

Change the following:

<a href="#add-to-favorite" id="add-to-favorite">
    <i class="fa fa-star-o"></i>&nbsp;
    <span class="add-to">Add to Favourites</span>
</a>

…to

<a href="#add-to-favorite" class="add-to-favorite">
    <i class="fa fa-star-o"></i>&nbsp;
    <span class="add-to">Add to Favourites</span>
</a>

Change your JS to:

$('a.add-to-favorite').click(function(eve){
    eve.preventDefault();
    eve.stopPropagation();
    var $context = $(this); //cache the click context here
    var $star = $context.find('i');
    var add_to_fav_options = {
        target:        ('#fav-target'),   // target element(s) to be updated with server response
        beforeSubmit:  function(){
            $star.addClass('fa-spin');
        },  // pre-submit callback
        success: function(){
            $star.removeClass('fa-spin');
            $context.hide(0,function(){
                //find the #fav-output element based on click context
                $context.find('#fav-output').delay(200).show();
            });
        }
    };

    $('#add-to-favorite-form').ajaxSubmit( add_to_fav_options );
});

note: untested

Update #2:

JavaScript…

$('.add-to-fav').click(function(eve){
    eve.preventDefault();
    eve.stopPropagation();
    var $context = $(this); //cache the click context here
    var $add_to_favorite = $context.find('a.add-to-favorite');
    var $star = $add_to_favorite.find('i');
    var add_to_fav_options = {
        target: $context.find('.fav-target'), // target element(s) to be updated with server response
        beforeSubmit:  function(){
            $star.addClass('fa-spin');
        },  // pre-submit callback
        success: function(){
            $star.removeClass('fa-spin');
            $add_to_favorite.hide(0,function(){
                //find the #fav-output element based on click context
                $add_to_favorite.find('.fav-output').delay(200).show();
            });
        }
    };

    $context.find('.add-to-favorite-form').ajaxSubmit( add_to_fav_options );
});

HTML…

<span class="add-to-fav">
    <?php
    $property_id = get_the_ID();
    if(is_added_to_favorite($property_id)) {
        ?>
        <div class="fav-output show">
            <i class="fa fa-star"></i>&nbsp;
            <span class="fav-target">Added to Favourites</span>
        </div>
        <?php
    } else {
        ?>
        <form action="<?php echo admin_url('admin-ajax.php'); ?>" method="post" class="add-to-favorite-form">
            <input type="hidden" name="property_id" value="<?php echo $property_id; ?>">
            <input type="hidden" name="action" value="add_to_favorite">
        </form>
        <div class="fav-output">
            <i class="fa fa-star"></i>&nbsp;
            <span class="fav-target">Added To Favourites</span>
            <span class="property-target-<?php echo $property_id; ?>" data-property-id="<?php echo $property_id; ?>"></span>
        </div>
        <a href="#add-to-favorite" class="add-to-favorite">
            <i class="fa fa-star-o"></i>&nbsp;
            <span class="add-to">Add to Favourites</span>
        </a>
        <?php
    }
    ?>
</span>