JavaScript is a programming language that helps make any object on a web page interactive, that is, visually display the response of one of the content elements to a user action. Thanks to JS, site visitors, when clicking on a button, for example, "add product to cart", see its external changes and understand that the action has been performed.
In this material, we will use simple words and examples to analyze the areas of JavaScript application and the specifics of its study.
What is JavaScript for?
JavaScript programming language is needed to make web pages philippines whatsapp number database interactive and able to quickly respond to visitors' actions in real time: load additional products when a person reaches the end of the page, show pop-up notifications about a new letter, recalculate the number of "likes" when a user leaves a "thumb" under a video, and much more. Dynamic web pages attract the attention of the audience, make interaction with the site pleasant and convenient.
What is JavaScript for?
JS is a client-side programming language, so the scripts written in the code are executed not on the server where the site data is stored, but in the user's browser. This means that actions are performed faster and there is no need to refresh the web page each time to view the result. JavaScript is used when they want to reduce the amount of space that the site takes up on the server, since some of the information will be saved directly in the browser.
JavaScript can be adapted to work on a server if you install a special interpreter program on it, which translates a script written in JS into code that a computer or other device can understand - into machine code. All modern browsers support JavaScript. Let's look at the main scripts that can be created using JavaScript.
Adapting content to the browser window
The size of elements on a web page is adjusted to the screen of the device on which the site is opened. It is convenient for the user to read text, open menus, view photos, etc.
Checking the correctness of filling out HTML forms
When a user fills out a form on the site (leaves an email for feedback, specifies personal information to create a personal account, etc.), he must enter data in the fields in the form established by the system requirements. The JS program validates and issues error information if the information is written incorrectly.