How to Create Animated Visual Effects Using jQuery

How to Create Animated Visual Effects Using jQuery

You can create animated visual effects by setting the CSS visibility property, i.e. making elements appearing and disappearing. Along with making an element appear and disappear, we might reduce the value of its opacity property over the certain period. This king of animated visual effect creates a more pleasing experience for user and jQuery makes them easy.

jQuery defines simple methods such as fadeIn() and fadeOut() for basic visual effects. You can also use an animate() method for producing more complex custom animations. 

Every animation has a duration that specifies how long the effect should last for. You can specify this as a number of milliseconds or by using a string. The string "fast" means 200ms and the sting "slow" means 600ms. If you specify a duration string that jQuery does not recognize, you will get a default duration of 400ms. 

$("#animation").fadeIn(); 
// It fades an element in over 400ms
$("#animation").fadeOut("fast"); 
// It fade outs over 200ms
$("#animation").fadeIn(5000);
//It fades an element in over 5000ms

You can also define new duration names by adding new string-to-number mappings to jQuery.fx.speeds as given below. 

jQuery.fx.speeds["medium-fast"]=3000;
jQuery.fx.speeds["medium-slow"]=5000;

Here is an example to create animated visual effects using methods fadeIn() and fadeOut() in jQuery 














It fade outs over 200ms


It fade outs over 5000ms



Preview:







It fade outs over 200ms

It fade outs over 5000ms

You can also set the value of the document that was animated using a function as argument. Here is a jQuery code which quickly fade in an element and when it is visible, display some text in it. 






Preview:






Passing a callback function to an effect method allows you to perform actions at the end of an effect. However, that is is not necessary when you simply want to perform multiple effects in sequence. If you call an animation method on an element that is already being animated, the new animation does not begin right away but is deferred until the current animation ends. For example, you can make an element blink before fading in permanently. 


It blinks before fading in permanently


Preview:

It blinks before fading in permanently


jQuery's effect methods are declared to accept optional duration and callback arguments. It is also possible to invoke these methods with an object whose properties specify animation options. 



This is sample animation effect


Preview:



This is sample animation effect


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