Use the ondragstart attribute in HTML to execute a script at the start of a drag operation in HTML.ExampleYou can try to run the following code to implement the ondragstart attribute −                    drag {          float: left;          width: 100px;          height: 35px;          border: 2px dashed #876587;          margin: 15px;          padding: 10px;          }                       ... Read More

Use the onended attribute in HTML to execute a script when the media has reached the end in HTML . You can add messages like “Thank you for watching”, “Stay tuned!”, etc.ExampleYou can try to run the following code to implement the onended attribute −                              Your browser does not support the video element.                      function display() {             alert ("Thank you for watching! Stay tuned!");          }          

Use the onemptied attribute in HTML to execute a script when the file is unavailable in HTML or it is empty.ExampleYou can try to run the following code to implement the onemptied attribute −                              Your browser does not support the video element.                      function display()          {             alert ("Sorry! Empty playlist!");          }          

Custom attributes are those that are specifically designed and are not included in the standard HTML5 attributes. They enable us to customise HTML tags by adding our own data. A custom attribute is any attribute whose name begins with data-. We can embed custom attributes on all HTML components using the data-* attributes. Syntax: HTML The syntax for the data-* attribute in HTML is relatively simple. Every element starting with data- is a data-* attribute. id = “sample” data-index = 1 data-row = 23 data-column = 44 ... Read More

When an element is being dragged and dropped in HTML, the ondragover attribute fires.ExampleYou can try to run the following code to implement the ondragover attribute −                    .drag {             float: left;             width: 100px;             height: 35px;             border: 2px dashed #876587;             margin: 15px;             padding: 10px;          }         ... Read More

Use the data attribute in HTML to specify the URL of the resource to be used by the object in HTML.ExampleYou can try to run the following code to implement the data attribute −           Demonstration                

Use the content attribute in HTML to get the value associated with http-equiv or name attribute.ExampleYou can try to run the following code to implement the content attribute −                         This is demo text.    

Use the onsearch attribute in HTML to execute a script when the user writes in a search field and press ENTER or x.ExampleYou can try to run the following code to implement the onsearch attribute −           Search something and press ENTER.             Note: It won' work in Internet Explorer and Firefox.                      function display() {          var a = document.getElementById("inputID");          document.getElementById("test").innerHTML = "Searched for - " + a.value;          }          

Use the controls attribute in HTML to include audio/ video controls in HTML.ExampleYou can try to run the following code to implement the controls attribute −           HTML video Tag               Online Compiler                                This browser doesn't support video tag.          

To set the coordinates of the area in an image map, Use the cords attribute in HTML to set the coordinates of the area in an image map in HTML.ExampleYou can try to run the following code to implement the cords attribute −           HTML coords attribute