A Web API is a developer's dream.
API stands for Application Programming Interface.
A Web API is an application programming interface for the Web.
A Browser API can extend the functionality of a web browser.
A Server API can extend the functionality of a web server.
All browsers have a set of built-in Web APIs to support complex operations, and to help accessing data.
For example, the Geolocation API can return the coordinates of where the browser is located.
Get the latitude and longitude of the user's position:
const myElement = document.getElementById("demo");
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
myElement.innerHTML = "Geolocation is not supported by this browser.";
}
}
function showPosition(position) {
myElement.innerHTML = "Latitude: " + position.coords.latitude +
"<br>Longitude: " + position.coords.longitude;
}
Third party APIs are not built into your browser.
To use these APIs, you will have to download the code from the Web.
Examples: