Toggle between editing in Touch UI and preview mode on AEM author pages.

toggle-touchui-author-bookmarklet.js

(function() {
  var newUrl = '',
      prevUrl = document.URL,
      isWcmmodeDisabled = /wcmmode=disabled/.test(prevUrl);
  if (/author\./.test(prevUrl)) {
    if (/^.*?\/editor.html/.test(prevUrl)) {
      newUrl = prevUrl.replace(/\/editor.html/, '');
      if (!isWcmmodeDisabled) {
        newUrl = newUrl + ((/\.html\?/.test(newUrl)) ? '&' : '?') + 'wcmmode=disabled';
      }
    } else {
      newUrl = prevUrl.replace(/^(.*?\.[\w]+?)\//, '$1/editor.html/');
      if (isWcmmodeDisabled) {
        newUrl = newUrl.replace(/[?|&]{1}wcmmode=disabled/, '').replace(/\.html&/, '.html?');
      }
    }
  }
  window.location = newUrl;
})();

// Compressed bookmarklet:
// javascript:(function(){var a="",b=document.URL,c=/wcmmode=disabled/.test(b);/author\./.test(b)&&(/^.*?\/editor.html/.test(b)?(a=b.replace(/\/editor.html/,""),c||(a=a+(/\.html\?/.test(a)?"&":"?")+"wcmmode=disabled")):(a=b.replace(/^(.*?\.[\w]+?)\//,"$1/editor.html/"),c&&(a=a.replace(/[?|&]{1}wcmmode=disabled/,"").replace(/\.html&/,".html?")))),window.location=a})();