Possibilities of code in the browser

[sumaiyakhatun25]

It is incorrect to say that JavaScript can do something – the capabilities of the script are limited by the browser. In most modern web browsers, JS is available:

changing existing HTML code and adding new code, changing style, for example, header color;
reactions to clicks, cursor movements, use of physical keys, scrolling, etc.
sending network requests to the server, downloading and uploading files;
showing messages and questions to the user;
storing data in the browser.

What is not available in JS, which was intended to be a safe language?


Browsers limit JavaScript's impact on websites and device performance, meaning it is prohibited from:

reading and writing files to hard drives, running programs, working with pakistan rcs data operating system functions;
access to camera and microphone (user must give permission);
interaction with other pages;
obtaining information from other sites and domains without their permission.
Typically, most restrictions require user confirmation to be removed.

JavaScript Libraries
JavaScript libraries are pre-written pieces of code that are stored as collections and can be reused by web developers to perform standard functions.

Such JS code fragments can be connected to other scripts when necessary. If you compare all the application code to a house, then libraries act as ready-made furniture that increases the functionality and convenience of the home. Let's look at individual examples of how JavaScript libraries can be used.