JavaScript is a high-level programming language that is widely used for creating interactive web pages. It was first introduced in 1995 by Brendan Eich, a Netscape Communications Corporation programmer. JavaScript is an interpreted language, which means that it does not need to be compiled before it is run.
JavaScript is a client-side language, meaning that it is executed on the user's computer rather than on the server. This allows for dynamic and interactive web pages, as JavaScript can be used to manipulate the content of a web page without requiring the page to be reloaded.
One of the primary uses of JavaScript is for form validation, where it can be used to ensure that user input is correct before submitting the form. It can also be used for creating animations, adding interactivity to buttons and menus, and for creating dynamic content that updates in real-time.
JavaScript is also commonly used in conjunction with other web technologies such as HTML and CSS. For example, it can be used to dynamically change the styles of an HTML element based on user input or to create a slideshow of images.
Overall, JavaScript is a versatile and powerful programming language that is essential for creating modern and interactive web pages.