[Code] Xem Thêm Rút Gọn Bài viết, Sản phẩm, Danh mục hoặc Bất cứ đâu bạn muốn

/* Mã Function Tạo Xem thêm, Rút Gọn cho Bài đăng, Danh mục, Sản phẩm, Vị trí custom
* Chia sẻ bởi https://realdev.vn/
*/
function realdev_readmore()
{
?>
    <script>
        jQuery(function($) {
            $(window).on('load', function() {
                var selectors = [
                    '.term-description',
                    '.term-short-description',
                    '.readmore',
                    '#tab-description',
                    '.product-section .entry-content',
                    '#accordion-description-content',
                    '.taxonomy-description',
                    '.taxonomy-full-description',
                    '.article-inner .entry-content',
                ];
                var height_set = {
                    '.term-description': 500,
                    '.term-short-description': 500,
                    '.readmore': 500,
                    '#tab-description': 500,
                    '.product-section .entry-content': 888,
                    '#accordion-description-content': 500,
                    '.taxonomy-description': 600,
                    '.taxonomy-full-description': 600,
                    '.article-inner .entry-content': 600,
                };
                selectors.forEach(function(selector) {
                    var elements = $(selector);
                    if (elements.length > 0) {
                        elements.each(function() {
                            var currentElement = $(this);
                            var height_current = currentElement.height();
                            if (height_current > height_set[selector]) {
                                currentElement.css('height', height_set[selector] + 'px');
                                currentElement.append(function() {
                                    return '<div class="realdev-readmore realdev-expand"><button><span class="arrow"><span></span></span> Xem thêm</button></div>';
                                });
                                currentElement.append(function() {
                                    return '<div class="realdev-readmore realdev-collapse" style="display: none"><button><span class="arrow"><span></span></span> </button>Thu gọn</div>';
                                });
                                $('body').on('click', '.realdev-expand', function() {
                                    currentElement.removeAttr('style');
                                    $('body .realdev-expand').hide();
                                    $('body .realdev-collapse').show();
                                });
                                $('body').on('click', '.realdev-collapse', function() {
                                    currentElement.css('height', height_set[selector] + 'px');
                                    $('body .realdev-expand').show();
                                    $('body .realdev-collapse').hide();
                                    $('html, body').animate({
                                        scrollTop: currentElement.offset().top
                                    }, 1000);
                                });
                            }
                        });
                    }
                });
            });
        });
    </script>
<?php
}
add_action('wp_footer', 'realdev_readmore',999);

/* Mã CSS Tạo Xem thêm, Rút Gọn cho Bài đăng, Danh mục, Sản phẩm, Vị trí custom
* Chia sẻ bởi https://realdev.vn/
*/

.term-description,
.readmore,
#tab-description,
.product-section .entry-content,
#accordion-description-content,
.taxonomy-description, .article-inner .entry-content,.term-short-description, .taxonomy-full-description {
    overflow: hidden;
    position: relative;
    margin-bottom: 1rem;
}

.realdev-readmore {
    text-align: center;
    z-index: 10;
}

.realdev-expand {
    position: absolute;
    bottom: -7px;
    width: 100%;
    background: #fff;
    height: 100px;
}

.realdev-readmore:before {
    content: "";
    position: absolute;
    bottom: 100%;
    height: 200px;
    left: 0;
    background-image: linear-gradient(180deg, hsla(0, 0%, 100%, 0), #fff);
    width: 100%;
}

.realdev-readmore .arrow:after {
    content: "";
    background: url(data:image/png;base64,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);
    display: block;
    width: 25px;
    top: 2px;
    right: 0;
    left: 0;
    margin: auto;
    position: absolute;
    opacity: .5;
    height: 15px;
    background-size: contain;
    background-repeat: no-repeat;
    animation: animate-arrow-2 1s ease-in-out infinite .1s;
}

.realdev-readmore .arrow:before {
    content: "";
    background: url(data:image/png;base64,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);
    display: block;
    width: 25px;
    right: 0;
    left: 0;
    top: -5px;
    margin: auto;
    position: absolute;
    opacity: 1;
    height: 15px;
    background-size: contain;
    background-repeat: no-repeat;
    animation: animate-arrow-3 1s ease-in-out infinite .2s;
}

.realdev-readmore .arrow span {
    animation: animate-arrow-1 1s ease-in-out infinite;
    background: url(data:image/png;base64,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);
    width: 25px;
    top: 9px;
    height: 15px;
    opacity: .3;
    background-size: contain;
    background-repeat: no-repeat;
    display: block;
    right: 0;
    left: 0;
    margin: auto;
    position: absolute;
}

@keyframes animate-arrow-1 {
    0% {
        transform: translateY(-40px);
        opacity: 0
    }

    70%,
    to {
        transform: translateY(0);
        opacity: .3
    }
}

@keyframes animate-arrow-2 {
    0% {
        transform: translateY(-20px);
        opacity: 0
    }

    70%,
    to {
        transform: translateY(0);
        opacity: .5
    }
}

@keyframes animate-arrow-3 {
    0% {
        transform: translateY(-10px);
        opacity: 0
    }

    70%,
    to {
        transform: translateY(0);
        opacity: 1
    }
}

.realdev-readmore button {
    top: 40px;
    color: #03a0e2;
    font-weight: 500;
}

.realdev-collapse button {
    transform: rotate(180deg);
    margin-bottom: 0;
    top: -10px;
}

.realdev-collapse {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #03a0e2;
    cursor: pointer;
}