10. jQuery Effects
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.
 
| [selector].hide( speed, [callback] ); | 
- 
    
     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]); | 
- 
    
     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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