Submit form only if at least one checkbox is checked

Question

i\'m triyng to validate a form. In this form you\'ve to choose at least one element by checkboxes, and I can\'t be sure about their quantity (it depends by elements number).

Answer 1

Vanilla JavaScript equivalent of the jQuery way, using document.querySelector

if (document.querySelector('.roomselect:checked')) {
    // somethings checked
}

Demo