Web API
Application Programming Interfaces (APIs) are constructs made accessible in programming languages to enable engineers to expand sophisticated usefulness without difficulty. They take the more unpredictable code away from you and replace it with a simpler phrase form. Consider the power supply in your home, loft, or other abodes as a reliable model. If you need to use an appliance in your home, you simply plug it into an adapter and it works. You don't attempt to connect it directly to the power source - it would be wasteful and, if you aren't a circuit repairman, difficult and dangerous. Customer's perspective JavaScript, in particular, has a number of APIs available to it.
These APIs are not part of the JavaScript language itself, but rather are built on top of it, providing you more superpowers to use in your JavaScript code. They're usually split into two groups: Program APIs are built into your web browser and can take data from the programme as well as the broader PC environment, as well as conduct valuable advanced functions.
For example, the Internet Sound Programming interface provides JavaScript constructs for manipulating sound in a programme, such as taking a sound track, adjusting its volume, applying effects, and so on. There's a lot going on behind the scenes., the software is actually using some unpredictable lower-level code (for example, C++ or Rust) to handle the actual sound management. The Programming interface, once again, takes your attention away from the complexity. API Outsider