Function addValidationMessage

pages/options.js:217–224

(el, message)

}

function addValidationMessage(el, message) {
  el.classList.add("validation-error");
  const exampleEl = el.nextElementSibling;
  const messageEl = document.createElement("div");
  messageEl.classList.add("validation-message");
  messageEl.textContent = message;
  exampleEl.after(messageEl);
}

// Returns true if there are errors, false otherwise.
function showValidationErrors() {