javascript - Targeting a clicked element with jquery

Question

I am trying to make a button that toggles between making an img grayscale and normal. I need to find a way to properly target the button if it was clicked. I tried adding a class on click and then targeting that class. I also tried this.

$('.switch').on("click", function() {
    if($(this).attr('data-click-state') == 1) {
        $(this).attr('data-click-state', 0)
        $(this).siblings('img').css("-webkit-filter", "grayscale(100%)");
    } else {
        $(this).attr('data-click-state', 1)
        $(this).siblings('img').css("-webkit-filter", "none");
    }
});

Why the button doesn't toggle between color and grayscale versions?

Answer 1

There is nothing wrong with the code you're showing us.

It looks like the problem is in your HTML, or in some part of your JS code that you aren't showing us.

Demo :

$('.switch').on("click", function() {
    if($(this).attr('data-click-state') == 1) {
        $(this).attr('data-click-state', 0)
        $(this).siblings('img').css("-webkit-filter", "grayscale(100%)");
    } else {
        $(this).attr('data-click-state', 1)
        $(this).siblings('img').css("-webkit-filter", "none");
    }
});

<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.1.min.js"></script>
<button class="switch" data-click-state="1">Switch</button><br/><br/>
<img src="http://1.gravatar.com/avatar/81bf1bd14d4465c89ca500001b22cf6e?size=140" />
<img src="http://1.gravatar.com/avatar/e711e151e517ae1b897898928cc7981c?size=140" />