Slide 4.8: What is JavaScript?

What Is JavaScript?

JavaScript is THE scripting language of the Web. JavaScript is used in billions of web pages to add functionality, validate forms, communicate with the server, and much more. JavaScript is the most popular scripting language on the Internet, and works in all major browsers, such as Edge, Firefox, Chrome, Opera, and Safari.

JavaScript was designed to add interactivity to HTML pages.
JavaScript is a scripting language.
A scripting language is a lightweight programming language.
JavaScript is usually embedded directly into HTML pages.
JavaScript is an interpreted language (means that scripts execute without preliminary compilation).
Everyone can use JavaScript without purchasing a license.


<html> <body> <h4>Example of onSubmit Event Handler</h4> Type your name and press the button<br /> <form name="myform" onSubmit="alert('Thank you ' + myform.data.value +'!')"> <input type="text" name="data"> <input type="submit" value="Submit this form"> </form> </body> </html>

Review: JavaScript

Which statement is true about JavaScript?

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