Query - Logical Operators

$('selector').is(selector);
$('selector').is(fn);

if ($('p').is('.active')) {
  console.log('At least one paragraph is active');
}

$('selector').not(selector);
$('selector').not(fn);

$('div').not('.ignore').addClass('highlight');

$('selector').contains(target);

if ($('.container').contains('.highlight')) {
  console.log('Container has highlighted elements');
}

const button = document.querySelector('button');
if ($('.toolbar').contains(button)) {
  console.log('Button is inside the toolbar');
}

const $inputs = $('input[required]');
if ($('form').contains($inputs)) {
  console.log('Form contains required inputs');
}

$$('web-component').contains('.shadow-element');

$('selector').exists();

if ($('.my-element').exists()) {
  console.log('Element found');
}