• Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
• Aliquam tincidunt mauris eu risus.
• Vestibulum auctor dapibus neque.
• Nunc dignissim risus id metus.
• Cras ornare tristique elit.
• Vivamus vestibulum ntulla nec ante.

.active { color: green; font-size: 20px; }

/*let link = "https://st2.depositphotos.com/1064024/10769/i/600/depositphotos_107694484-stock-photo-little-boy.jpg";

$("ul") .css({ background: "red", color: "#fff", "font-size": "20px" }) .find("li") .html("

img.css({
  widht: "100px",
  height: "200px",
});

img.on("click", function () {
 $(this).css({
    widht: "300px",
    height: "400px"
  });
});

$(this).append(img);
$(this).html(`<img src='${link}' \>`);
 $(this).remove();
$(this).css('font-size', '10px')
console.log(this)

}); */

$('h2') .on('dblclick', function () { $('ul').css('background', 'red');

$('li').each(function(index, element) { let text = $(element).text(); if ((index+1) % 2 === 0) { $(element).css('background', '#fff').on('click', function () {

     $(element).toggleClass('active');
    // alert($(element).text());
     
   });
 }
$(element).text(`${index+1}. ${text}`);

// console.log(index, text); });

});