js odstrániť html element
// Get the element you want to remove
var element = document.getElementById(elementId);
// Get the parent and remove the element since it is a child of the parent
element.parentNode.removeChild(element);
javascript Odstránenie Prvkov
const set = new Set([1, 2, 3]);
console.log(set.values()); // Set Iterator [1, 2, 3]
// removing a particular element
set.delete(2);
console.log(set.values()); // Set Iterator [1, 3]