What is "jquery"
jQuery is a library of javascript focused primarily on DOM manipulation, event management, and Ajax, seeking to free developers from dealing directly with a number of browser compatibility issues. It also offers simple animation features, an implementation of Promises, and an architecture for creating plugins.
The main benefits of using jQuery are:
- Resolving the incompatibility between browsers.
- Code reduction.
- Chaining of method calls.
- Reusability of code through plug-ins.
- Simplified methods for DOM manipulation, based on CSS selectors.
- Simplified methods for making Ajax calls.
- Secure CSS1, CSS2, and CSS3 resource deployment.
Hello World
Showing Hello world! in an alert box on each click link after the DOM is ready:
$(function() {
$("a").click(function(event) {
event.preventDefault();
alert("Hello world!");
});
});