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script.js
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script.js
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const tabTitles = document.body.querySelectorAll(".tabs__item");
//set active class for link
const tabsContent = document.body.querySelector(".tabs-content");
const tabsSections = document.body.querySelectorAll(".tabs-content__section");
const setActive = () => {
const isMobile = window.innerWidth <= 820;
const desktopContainerPosition = document.body
.querySelector(".tabs-content")
.getBoundingClientRect().top;
const containerPosition = isMobile ? 0 : desktopContainerPosition;
tabsSections.forEach((section) => {
const sectionPosition = section.getBoundingClientRect().top;
const diff = isMobile
? containerPosition - sectionPosition
: Math.abs(containerPosition - sectionPosition);
if (diff < 30 && diff > -70) {
document.body
.querySelector(".tabs__item_active")
.classList.remove("tabs__item_active");
document.body
.querySelector(`[href='#${section.getAttribute("id")}']`)
.classList.add("tabs__item_active");
Promise.resolve(() => {
location.hash = section.getAttribute("id");
});
if (isMobile) {
document.body.querySelector(".tabs__item_active").scrollIntoView();
}
}
});
};
let timerId;
const tabsContainer = document.body.querySelector(".tabs");
const setMobile = () => {
const tabsPosition = tabsContainer.getBoundingClientRect().top;
if (window.innerWidth <= 820) {
document.addEventListener("scroll", setMobile);
document.addEventListener("scroll", setActive);
tabsContent.removeEventListener("scroll", setActive);
if (tabsPosition < 70) {
tabsContainer.classList.add("tabs_fixed");
} else {
tabsContainer.classList.remove("tabs_fixed");
}
} else {
document.removeEventListener("scroll", setMobile);
document.removeEventListener("scroll", setActive);
tabsContent.addEventListener("scroll", setActive);
tabsContainer.classList.remove("tabs_fixed");
}
};
setMobile();
window.addEventListener("resize", () => {
clearTimeout(timerId);
timerId = setTimeout(() => {
setMobile();
setActive();
}, 50);
});