Basic Accordion

new HandyCollapse(); // default options

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Nested Accordion

const nested = new HandyCollapse({
    nameSpace: "nested",
    closeOthers: false
});

Callback

 const callback = new HandyCollapse({
    nameSpace: "callback",
    closeOthers: false,
    onSlideStart: (isOpen, contentID) => {
        console.log(isOpen);
        let buttonEl = document.querySelector(`[data-callback-control='${contentID}']`);
        if (!buttonEl) return;
        if (isOpen) {
            buttonEl.textContent = "Opened " + contentID;
        } else {
            buttonEl.textContent = "Closed " + contentID;
        }
    }
});

Tab

const tab = new HandyCollapse({
    nameSpace: "tab",
    closeOthers: true,
    isAnimation: false
});
 .tab-button.is-active {
    pointer-events: none;
}
.tab-content .box {
    opacity: 0;
    transform: translateY(20px);
    transition: .5s;
}
.tab-content.is-active .box {
    opacity: 1;
    transform: translateY(0px);
}