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jQuery effects - jQuery basic tutorial 10

10. jQuery Effects

jQuery provides a trivially simple interface for doing various kind of amazing effects. jQuery methods allow us to quickly apply commonly used effects with a minimum configuration.
This tutorial covers all the important jQuery methods to create visual effects.

Showing and Hiding elements:

The commands for showing and hiding elements are pretty much what we would expect: show() to show the elements in a wrapped set and hide() to hide them.

Syntax:

Here is the simple syntax for show() method:
[selector].show( speed, [callback] );
Here is the description of all the parameters:
  • speed: A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
  • callback: This optional parameter represents a function to be executed whenever the animation completes; executes once for each element animated against.
Following is the simple syntax for hide() method:
[selector].hide( speed, [callback] );
Here is the description of all the parameters:
  • speed: A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
  • callback: This optional parameter represents a function to be executed whenever the animation completes; executes once for each element animated against.

Example:

Consider the following HTML file with a small JQuery coding:
<html>
<head>
<title>the title</title>
   <script type="text/javascript" 
   src="/jquery/jquery-1.3.2.min.js"></script>
   <script type="text/javascript" language="javascript">
   
   $(document).ready(function() {

     $("#show").click(function () {
        $(".mydiv").show( 1000 );
     });

     $("#hide").click(function () {
        $(".mydiv").hide( 1000 );
     });

   });

   </script>
   <style>
   .mydiv{ margin:10px;padding:12px;
      border:2px solid #666;
      width:100px;
      height:100px;
    }
  </style>
</head>
<body>
   <div class="mydiv">
      This is  SQUAR
   </div>

   <input id="hide" type="button" value="Hide" />   
   <input id="show" type="button" value="Show" />   

</body>
</html>

Toggling the elements:

jQuery provides methods to toggle the display state of elements between revealed or hidden. If the element is initially displayed, it will be hidden; if hidden, it will be shown.

Syntax:

Here is the simple syntax for one of the toggle() methods:
[selector]..toggle([speed][, callback]);
Here is the description of all the parameters:
  • speed: A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
  • callback: This optional parameter represents a function to be executed whenever the animation completes; executes once for each element animated against.

Example:

We can animate any element, such as a simple <div> containing an image:
<html>
<head>
<title>the title</title>
   <script type="text/javascript" 
   src="/jquery/jquery-1.3.2.min.js"></script>
   <script type="text/javascript" language="javascript">

   $(document).ready(function() {
      $(".clickme").click(function(event){
          $(".target").toggle('slow', function(){
             $(".log").text('Transition Complete');
          });
      });

   });
   </script>
   <style>
   .clickme{ margin:10px;padding:12px;
      border:2px solid #666;
      width:100px;
      height:50px;
    }
   </style>
</head>
<body>
   <div class="content">
      <div class="clickme">Click Me</div>
      <div class="target">
         <img src="/images/jquery.jpg" alt="jQuery" />
      </div>
      <div class="log"></div>
</body>
</html>

JQuery Effect Methods:

You have seen basic concept of jQuery Effects. Following table lists down all the important methods to create different kind of effects:

Methods and Description
animate( params, [duration, easing, callback] )
A function for making custom animations.
fadeIn( speed, [callback] )
Fade in all matched elements by adjusting their opacity and firing an optional callback after completion.
fadeOut( speed, [callback] )
Fade out all matched elements by adjusting their opacity to 0, then setting display to "none" and firing an optional callback after completion.
fadeTo( speed, opacity, callback )
Fade the opacity of all matched elements to a specified opacity and firing an optional callback after completion.
hide( )
Hides each of the set of matched elements if they are shown.
hide( speed, [callback] )
Hide all matched elements using a graceful animation and firing an optional callback after completion.
show( )
Displays each of the set of matched elements if they are hidden.
show( speed, [callback] )
Show all matched elements using a graceful animation and firing an optional callback after completion.
slideDown( speed, [callback] )
Reveal all matched elements by adjusting their height and firing an optional callback after completion.
slideToggle( speed, [callback] )
Toggle the visibility of all matched elements by adjusting their height and firing an optional callback after completion.
slideUp( speed, [callback] )
Hide all matched elements by adjusting their height and firing an optional callback after completion.
stop( [clearQueue, gotoEnd ])
Stops all the currently running animations on all the specified elements.
toggle( )
Toggle displaying each of the set of matched elements.
toggle( speed, [callback] )
Toggle displaying each of the set of matched elements using a graceful animation and firing an optional callback after completion.
toggle( switch )
Toggle displaying each of the set of matched elements based upon the switch (true shows all elements, false hides all elements).
jQuery.fx.off
Globally disable all animations.

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