Use the async attribute to set the script to execute asynchronously as and when it is available. It only uses the external script.Firstly, add a js file. Let us give it a name, new.js,function sayHello() {    alert("Hello World") }Let’s add the HTML code now and execute the above script −                         This is demo text.    

Use the action attribute to add the file, where you want to reach after clicking Submit button. You can also add an email to send the data to that email-id.ExampleYou can try to run the following code to set where to send the form-data when a form is submitted in HTML −           Student Contact Form                Student Name:          Student Subject:                    

Use the align attribute to set the alignment. You can try to run the following code to implement align attribute in HTML −Note − The align attribute deprecated in HTML5. Use CSS instead.Example           A right-aligned paragraph.       Note: The align attribute is not supported in HTML5. Use CSS instead.    

Use the alt attribute to add alternative text for an image. If the user fails to view it (loading issue), then the same text will be visible. In addition, the attribute helps screen readers in reading the content to the user.ExampleYou can try to run the following code to implement alt attribute in HTML −           HTML alt attribute               Simple Image Insert          

The accept-charset attribute in HTML is used to include the character encodings for form submission.ExampleYou can try to run the following code to implement accept-charset attribute in HTML −           File Upload Box                                  

Use the accept attribute to set the types of files that the server accepts in HTML. Use the attribute only with .ExampleYou can try to run the following code to work with accept attribute −           File Upload Box                                  

Use the tag to create preformatted text. Note − The tag deprecated.ExampleYou can try to run the following code to learn how to create preformatted text in HTML −           HTML xmp Tag               HTML tags include       for bold text, for italic text.