Supports CSS3 selectors to find elements as well as in style property manipulation

The 1.x and 2.x branches no longer receive patches.

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.

A Brief Look

DOM Traversal and Manipulation

Get the <button> element with the class 'continue' and change its HTML to 'Next Step...'

1 $( "button.continue" ).html( "Next Step..." )

Event Handling

Show the #banner-message element that is hidden with display:none in its CSS when any button in #button-container is clicked.

1 2 3 4 var hiddenBox = $( "#banner-message" ); $( "#button-container button" ).on( "click" , function ( event ) { hiddenBox.show(); });

Ajax

Call a local script on the server /api/getWeather with the query parameter zipcode=97201 and replace the element #weather-temp 's html with the returned text.