3. События

&lt;br&gt;&lt;br&gt; &lt;div style=&quot;text-align:right&quot;&gt;&lt;b&gt;&lt;a href=&quot;/upload/academy-docs/kurs_dev_material/n2/k2_les3.zip&quot;&gt;Скачать задание и материалы к уроку&lt;/a&gt;&lt;/b&gt;&lt;/div&gt; &lt;p&gt;&lt;b&gt;Введение и пример 1&lt;/b&gt;&lt;/p&gt; &lt;!--&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/HR4Xt_Zfgw8&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;--&gt; &lt;iframe src=&quot;https://vk.com/video_ext.php?oid=-211967493&id=456239431&hash=a6ee39943fc70f13&hd=2&quot; width=&quot;560&quot; height=&quot;315&quot; allow=&quot;autoplay; encrypted-media; fullscreen; picture-in-picture;&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt; &lt;br&gt;&lt;br&gt; &lt;p class=&quot;less-part-name&quot;&gt;&lt;b&gt;Пример 2&lt;/b&gt;&lt;/p&gt; &lt;!--&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/2Q1grnIWurk&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;--&gt; &lt;iframe src=&quot;https://vk.com/video_ext.php?oid=-211967493&id=456239432&hash=04dc475eef34d4d5&hd=2&quot; width=&quot;560&quot; height=&quot;315&quot; allow=&quot;autoplay; encrypted-media; fullscreen; picture-in-picture;&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt; &lt;br&gt;&lt;br&gt; &lt;p class=&quot;less-part-name&quot;&gt;&lt;b&gt;Пример 3&lt;/b&gt;&lt;/p&gt; &lt;!--&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/WjBvPCQ8kH8&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;--&gt; &lt;iframe src=&quot;https://vk.com/video_ext.php?oid=-211967493&id=456239433&hash=b19c83400ef4dec6&hd=2&quot; width=&quot;560&quot; height=&quot;315&quot; allow=&quot;autoplay; encrypted-media; fullscreen; picture-in-picture;&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt; &lt;br&gt;&lt;br&gt; &lt;p class=&quot;less-part-name&quot;&gt;&lt;b&gt;Итоги&lt;/b&gt;&lt;/p&gt; &lt;!--&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/XCAQOkN2zSg&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;--&gt; &lt;iframe src=&quot;https://vk.com/video_ext.php?oid=-211967493&id=456239434&hash=72d47c462fb22e51&hd=2&quot; width=&quot;560&quot; height=&quot;315&quot; allow=&quot;autoplay; encrypted-media; fullscreen; picture-in-picture;&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;