Unable to adjust opacity level with Bootstrap slider

I am encountering issues with my slider as it is not changing the value properly. Every time I try, I receive an error message in the console saying "

Uncaught TypeError: Cannot set property 'opacity' of undefined
".

What I want to achieve is to adjust the opacity value from 1 (the initial value) to a value calculated as the slider value multiplied by .01...

This is my script:

<div id="jpegcam" class="jpegcam_slider" style="opacity: 1; z-index: 1; position: absolute; margin-left: auto; margin-right: auto; left: 0; right: 0; top: 239px"></div>

<input id="ex1" data-slider-id='ex1Slider' type="text" data-slider-min="0" data-slider-max="100" data-slider-step="1" data-slider-value="100"/>
            <script>
                $('#ex1').slider({
                    formater: function(opacity) {
                        return 'Current value: ' + opacity;
                    }
                });
                $('#ex1').on('slide', function(value)
                {
                    $('.jpegcam_slider').style.opacity = (value*.01);
                });
            </script>

I have been researching for quite some time on Google and forums but haven't found a solution yet...

Can anyone point out what I might be doing incorrectly? Thank you!

PS: I am utilizing the slider bootstrap js and css plugin available here.

javascriptjqueryhtmlcsstwitter-bootstrap

Answer №1

For a more efficient solution, consider utilizing the css() function as it can directly target jQuery objects like $('.jpegcam_slider'):

$('.jpegcam_slider').css('opacity', value*.01);

Answer №2

You are mixing jQuery with regular JavaScript.

In order to correct this issue, you should modify the following line:

$('.jpegcam_slider').style.opacity = (value*.01);

You can either access the native element object from the jQuery object (using [0]):

$('.jpegcam_slider')[0].style.opacity = (value*.01);

Alternatively, you can utilize jQuery's built-in CSS method:

$('.jpegcam_slider').css({ opacity: value*.01 });

For more information, visit and http://learn.jquery.com to grasp the fundamentals.

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