jQuery Reference

Quick Reference

The fadeTo() method gradually changes the opacity for the selected element to a specified opacity, fading in or fading out the element.

$('div').fadeTo();

Syntax

$(selector).fadeTo(speed, opacity, easing, callback)
$('button').click(function() {
    $('div').fadeTo('slow', 0.5, 'swing');
});

Note

It is generally good practice to place your jQuery code/function inside the document load function so that the action takes place ONLY after the document has finished loading. This ensures that all of the page elements that you may be selecting are in place before running the code on them.

Parameters

ParameterDescription
speedSpecifies the speed of the fading effect; possible values (required):
  • milliseconds
  • "slow"
  • "fast"
opacitySpecifies the opacity to fade to; must be a number between 0.00 and 1.00
easingSpecifies the speed of the element in different points of the animation; possible values:
  • "swing" - moves slower at the beginning/end, but faster in the middle (default)
  • "linear" - moves in a constant speed
callbackA function to be executed after the fadeTo() method is completed

jQuery Notes:

  • To use jQuery on your site, it must first be downloaded from the official jQuery site and linked to in your document <head>, or linked to via a CDN in your document <head>
  • It is generally good practice to place your jQuery code/function inside the document load function so that the action takes place ONLY after the document has finished loading
  • When using jQuery, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.