JavaScript订阅按钮仅在我单击图标而不是按钮的其余部分时起作用

Question

我有一个订阅用户配置文件按钮，该按钮仅在单击RSS字体真棒图标而不是其余按钮时起作用。我尝试了几次重写，其中将按钮元素在单击事件中制作，但它们根本不起作用。

这是仅在单击图标元素时工作的代码：

            <button class='subscribe-button profile-subscribe'> 
                <?php if ($profile->userSubscribed): ?>
                    <i class="fa-solid fa-user-check subscribe" data-user='<?= esc($profile->username);?>'></i>Subscribed
                <?php else: ?>   
                    <i class="fa-solid fa-rss subscribe" data-user='<?= esc($profile->username);?>'>
                    </i> Subscribe
                <?php endif ?>
            </button>

<script>
    $(document).ready(function() {  
        var csrfName = "<?= csrf_token(); ?>";
        var csrfHash = "<?= csrf_hash(); ?>"; 

    // If user clicks the subscribe button
        $(".subscribe").on("click", function () {
            var userProfile = $(this).data("user");
            $clicked_btn = $(this);

            if ($clicked_btn.hasClass("fa-solid fa-rss")) {
                action = "subscribe";
            } else if ($clicked_btn.hasClass("fa-solid fa-user-check")) {
                action = "unsubscribe";
            }

            $.ajax ({
                url: "<?= base_url(); ?>/users/members/view_profile/<?= $profile->username;?>",
                type: "post",
                dataType: "json",
                data: {
                    [csrfName]: csrfHash,
                    "action": action,
                    "user_profile": userProfile,
                },
                headers: {
                    'X-Requested-With': 'XMLHttpRequest',
                },
                success: function(data) {
                    var res = data;
                    csrfName = res.csrfName;
                    csrfHash = res.csrfHash;

                    if (action == "subscribe") {
                        $clicked_btn.removeClass("fa-solid fa-rss");
                        $clicked_btn.addClass("fa-solid fa-user-check");
                    } else if (action == "unsubscribe") {
                        $clicked_btn.removeClass("fa-solid fa-user-check");
                        $clicked_btn.addClass("fa-solid fa-rss");
                    }
                }
            });
        });
    });
</script>

这是使整个按钮可单击的尝试：

<button class='subscribe-button profile-subscribe subscribe' id='<?= esc($profile->username); ?>'>   
    <i class="fa-solid fa-rss"></i> Subscribe
</button>

<script>
    $(document).ready(function() {  
        var csrfName = "<?= csrf_token(); ?>";
        var csrfHash = "<?= csrf_hash(); ?>"; 

    // If user clicks the subscribe button
        $(".subscribe").on("click", function (event) {
            var userProfile = this.id;
            $clicked_btn = $(this);

            if ($clicked_btn.hasClass("fa-solid fa-rss")) {
                action = "subscribe";
            } else if ($clicked_btn.hasClass("fa-solid fa-user-check")) {
                action = "unsubscribe";
            }

            $.ajax ({
                url: "<?= base_url(); ?>/users/members/view_profile/<?= $profile->username;?>",
                type: "post",
                dataType: "json",
                data: {
                    [csrfName]: csrfHash,
                    "action": action,
                    "user_profile": userProfile,
                },
                headers: {
                    'X-Requested-With': 'XMLHttpRequest',
                },
                success: function(data) {
                    var res = data;
                    csrfName = res.csrfName;
                    csrfHash = res.csrfHash;
                
                    if ($('.subscribe').hasClass('subscribed')) {
                        $('.subscribe').removeClass('subscribed');
                        $('.subscribe').html('<i class="fa-solid fa-rss"</i>Subscribe');
                        
                    } else {
                        $('.like').addClass('subscribed');
                        $('.like').html('<i class="fa-solid fa-user-check">Subscribed');
                    }
                }
            });
        });
    });
</script>

Answer 1

您有正确的想法，可以更改单击处理程序以选择按钮而不是图标，但是您错过了此后的步骤，这改变了您检测到是“订阅”还是“取消订阅”的方式。当单击处理程序在图标上时，该类直接在单击元素上，但是当您更改为父按钮时，您必须选择“到按钮的孩子”以查看图标上的类，以确定是否订阅“或“退订”。这应该很容易解决：

$clicked_btn = $(this);
let $icon = $clicked_btn.find('i').first();

if ($icon.hasClass("fa-solid fa-rss")) {
    action = "subscribe";
} else if ($icon.hasClass("fa-solid fa-user-check")) {
    action = "unsubscribe";
}