gallery/script/nsfw-warning.js

(function () {
'use strict';

let nsfwOk = 'nsfw-ok';

function alreadyYes() {
  return localStorage.getItem(nsfwOk);
}

function dismiss() {
  let dialog = document.getElementById('nsfw-dialog');
  dialog.parentElement.removeChild(dialog);
}

function yes() {
  localStorage.setItem(nsfwOk, 1);
  dismiss();
}

function no() {
  history.go(-1);
}

function setup() {
  if (alreadyYes()) {
    dismiss();
  } else {
    document.getElementById('nsfw-yes').onclick = yes;
    document.getElementById('nsfw-no').onclick = no;
  }
}

document.addEventListener('DOMContentLoaded', setup);

})();