The combined use of jQuery's .toggle() and addClass() functions is not producing the intended outcome

My goal is to create a link using <a> with two different backgrounds, one displaying a "Down Arrow" and the other an "Up Arrow" based on the class names arrow-up and arrow-down.

Upon clicking the down arrow, the div named product-add-wrapper should slide down, while the down arrow transforms into an up arrow, and vice versa.

The issue I am encountering is that although the .toggle + callback function appears to be working correctly by adding and removing the desired class names, the background-image does not change (the down arrow remains as a down arrow).

Below is the provided HTML code:

<span class="arrow-right">
    <a class="updown arrow-down">&nbsp;</a>
</span>

Here is the corresponding CSS code:

.updown {
    display: block;
    margin-top: -1px;
    height: 25px;
    width: 25px;
}

.arrow-up {
    background-image: url('../img/arrow-up.png');
}

.arrow-down {
    background-image: url('../img/arrow-down.png');
}

And lastly, here is the accompanying JavaScript code:

$('.updown').click(function() {
    $('#product-add-wrapper').toggle('slow', function() {
        var classname = $('.updown').attr('class');
        if (classname === 'up arrow-down') {
            $('.updown').removeClass('arrow-down').addClass('arrow-up');
        } else {
            $('.updown').removeClass('arrow-up').addClass('arrow-down');
        }
    });
});

If you have any insights or solutions to this problem, I would greatly appreciate your help. Thank you in advance.

Answer №1

The class name will never be 'up arrow-down' - it's likely you meant 'updown arrow-down'.

if (classname === 'up arrow-down') {

A better way to write this would be:

$('.updown').click(function() {
    $('#product-add-wrapper').toggle('slow', function() {
        if ($('.updown').hasClass('arrow-down')) {
            $('.updown').removeClass('arrow-down').addClass('arrow-up');
        } else {
            $('.updown').removeClass('arrow-up').addClass('arrow-down');
        }
    });
});

Alternatively: Js:

$('.updown').click(function() {
    $('#product-add-wrapper').toggle('slow', function() {
        $('.updown').toggleClass('arrow-up');
    });
});

CSS:

.updown {
    display: block;
    margin-top: -1px;
    height: 25px;
    width: 25px;
    background-image: url('../img/arrow-down.png');
    color:green;
}

.arrow-up {
    background-image: url('../img/arrow-up.png');
    color:red;
}

HTML:

<span class="arrow-right">
    <a class="updown">&nbsp;aa</a>
</span>
<div id="product-add-wrapper">
    aa
</div>

Jsfiddle: http://jsfiddle.net/kingmotley/K7274/1/

Answer №2

Take a look at this code snippet utilizing the .click() event listener in place of toggle:

$('.updown').click(function (){ 
    if ($(this).hasClass("arrow-down")){ 
        $('#product-add-wrapper').slideUp("slow");
        $(this).removeClass('arrow-down').addClass('arrow-up');
    } else { 
        $('#product-add-wrapper').slideDown("slow");
        $(this).removeClass('arrow-up').addClass('arrow-down');
    };
});

Here is the corresponding HTML:

<span class="arrow-right">
    <a class="updown arrow-down">&nbsp;</a>
</span>

<div id="product-add-wrapper">
    ... CONTENT OF THE DIV ...
</div>

Check out the live demo: http://jsfiddle.net/9wxfJ/3/

Answer №3

This code snippet demonstrates the use of the hasClass method:

    $('.updown').click(function() {
        $('#product-add-wrapper').toggle('slow', function() {
            if($('.updown').hasClass('arrow-down')) {
                $('.updown').addClass('arrow-up');
                $('.updown').removeClass('arrow-down');
            } else {
                $('.updown').addClass('arrow-down');
                $('.updown').removeClass('arrow-up');
        }
    });
});

Try it out on Fiddle: http://jsfiddle.net/RP294/

Answer №4

If I were to approach this, I would streamline it by using just one class instead of two. Since the default state of the element is known, there's no need for a separate .arrow-down class. Instead, assign the background styling to the .updown class and use !important in the .arrow-up class to override it when toggled:

HTML

<span class="arrow-right">
    <a class="updown">&nbsp;</a>
</span>

CSS

.updown {
    display: block;
    margin-top: -1px;
    height: 25px;
    width: 25px;
    background-image: url('../img/arrow-down.png');

}

.arrow-up {
    background-image: url('../img/arrow-up.png') !important;
}

This approach will also reduce the amount of JavaScript code needed:

$('body').on('click', '.updown', function(e){
    var arrow = $(this);
    $('#product-add-wrapper').toggle('slow', function() {
      arrow.toggleClass('arrow-up');
    });
});

Answer №5

It's working perfectly for me

http://jsfiddle.net/Hzmxc/

$('.updowns').click(function() {
    $('#product-add-wrapper .updown').toggle('slow', function() {
        if ($('.updowns').hasClass('arrow-down')) {
            $('.updowns').removeClass('arrow-down').addClass('arrow-up');
        } else {
            $('.updowns').removeClass('arrow-up').addClass('arrow-down');
        }
    });
});

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