InDomArray extends Array, so every native Array method works. All methods that return a new array (concat, filter, flat, flatMap, map, slice, toReversed, toSorted, toSpliced) automatically return another InDomArray.

Examples:

// Suppose that for every #mainMenu>div there is a matching .menu-icon (e.g. positioned fixed)
const menuIcons = $a('.menu-icon');
$a('#mainMenu>div').each((n, i) => {
  n.onEnter(() => menuIcons[i].addClass('on'));
  n.onLeave(() => menuIcons[i].removeClass('on'));
});

const cat = $id('categories');
// Sort direct child .example divs by number of their direct span children,
// then re-append in new order
cat.append($a('>div', cat).sort((a, b) => $a('>span', a).length - $a('>span', b).length));