animating addClass removeClass with jQuery

Question

I am using jQuery and jQuery-ui and want to animate various attributes on various objects    For the sake of explaining the issue here I ve simplified it to one div that changes from blue to red when the user mouses over it   I am able to get the behavior I want when using animate    however when doing so the styles I am animating have to be in the animation code and so are separate from my style sheet   see example 1   An alternative is using addClass   and removeClass   but I have not been able to re-create the exact behavior that I can get with animate     see example 2     Example 1  Let s take a look at the code I have with animate         someDiv      mouseover function          this  stop   animate   backgroundColor  blue     duration 500            mouseout function          this  stop   animate   backgroundColor  red     duration 500            it displays all the behaviors I am looking for    Animates smoothly between red and blue  No animation  overqueue-ing  when the user moves their mouse quickly in and out of the div  If the user moves their mouse out in while the animation is still playing it eases correctly between the current  halfway  state and the new  goal  state    But since the style changes are defined in animate   I have to change the style values there  and can t just have it point to my stylesheet  This  fragmenting  of where styles are defined is something that really bothers me     Example 2  Here is my current best attempt using addClass   and removeClass  note that for the animation to work you need jQuery-ui       assume classes  red  and  blue  are defined      someDiv      addClass  blue      mouseover function          this  stop true false  removeAttr  style   addClass  red    duration 500            mouseout function          this  stop true false  removeAttr  style   removeClass  red    duration 500            This exhibits both property 1  and 2  of my original requirements  however 3 does not work   I understand the reason for this   When animating addClass   and removeClass   jQuery adds a temporary style to the element  and then increments the appropriate values until they reach the values of the provided class  and only then does it actually add remove the class   Because of this I have to remove the style attribute  otherwise if the animation is stopped halfway the style attribute would remain and would permanently overwrite any class values  since style attributes in a tag have higher importance than class styles   However when the animation is halfway done it hasn t yet added the new class  and so with this solution the color jumps to the previous color when the user moves their mouse before the animation is completed     What I want ideally is to be able to do something like this       someDiv      mouseover function          this  stop   animate  getClassContent  blue     duration 500            mouseout function          this  stop   animate  getClassContent  red     duration 500            Where getClassContent would just return the contents of the provided class  The key point is that this way I don t have to keep my style definitions all over the place  but can keep them in classes in my stylesheet

User · Answer

You just need the jQuery UI effects-core  13KB   to enable the duration of the adding  just like Omar Tariq it pointed out

User · Answer

You could use jquery ui s switchClass  Heres an example       selector    switchClass   oldClass    newClass   1000   easeInOutQuad       Or see this jsfiddle

User · Answer

Another solution  but it requires jQueryUI as pointed out by Richard Neil Ilagan in comments   -  addClass  removeClass and toggleClass also accepts a second argument  the time duration to go from one state to the other     this  addClass  abc  1000     See jsfiddle - http   jsfiddle net 6hvZT 1

User · Answer

Although  the question is fairly old  I m adding info not present in other answers   The OP is using stop   to stop the current animation as soon as the event completes  However  using the right mix of parameters with the function should help  eg  stop true true  or stop true false  as this affects the queued animations well   The following link illustrates a demo that shows the different parameters available with stop   and how they differ from finish     http   api jquery com finish    Although the OP had no issues using JqueryUI  this is for other users who may come across similar scenarios but cannot use JqueryUI need to support IE7 and 8 too

User · Answer

Since you are not worried about IE  why not just use css transitions to provide the animation and jQuery to change the classes  Live example  http   jsfiddle net tw16 JfK6N    someDiv      -webkit-transition  all 0 5s ease      -moz-transition  all 0 5s ease      -o-transition  all 0 5s ease      transition  all 0 5s ease

User · Answer

I was looking into this but wanted to have a different transition rate for in and out    This is what I ended up doing     css  addedClass       background   5eb4fc        js function setParentTransition id  prop  delay  style  callback          id  css   -webkit-transition    prop         delay         style          id  css   -moz-transition    prop         delay         style          id  css   -o-transition    prop         delay         style          id  css   transition    prop         delay         style        callback      setParentTransition id   background    0s    ease   function             elementID   addClass  addedClass         setTimeout function         setParentTransition id   background    2s    ease   function                 elementID   removeClass  addedClass                  This instantly turns the background color to  5eb4fc and then slowly fades back to normal over 2 seconds   Here s a fiddle

[javascript] animating addClass/removeClass with jQuery

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