Dynamically Close Navigation on Small Screens

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This code checks if the document’s ready state is “interactive” and if the window’s inner width is less than or equal to 800 pixels. If both conditions are true, it performs some actions:
document.onreadystatechange = () => {
if (document.readyState === “interactive”) {
if (window.innerWidth <= 800) {
document.getElementsByClassName(‘navList’)[0].classList.remove(“is-open”);
document.getElementsByClassName(‘sidebarBlock-heading’)[0].classList.remove(“is-open”);
}
}
}
1- It selects the element with the class ‘navList’ using getElementsByClassName and removes the “is-open” class from it.
2- It selects the element with the class ‘sidebarBlock-heading’ using getElementsByClassName and removes the “is-open” class from it.