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How to stagger?

oby1 test
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Go to solution Solved by oby1,

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This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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so I am trying to animate letters individualy. for this purpose  I'm taking text out of a jason object, breaks it into individual letters, and set each individual letter in its own <div> . the ideas is to be able to animate each letter individualy using stagger. 
However, as you can see TweenMax.staggerTo(elements, 5.5, { opacity:1});  changes the opacity of all the elements at the same time.

Any idea why stagger is not working as I think it should?

<div id = 'test'></div>
#test { 
        height: 500px;
	width: 500px;
.textlineholder {
	width: 100%;
	position: relative;
.letter {
	position: relative;
	opacity: 0;
$( document ).ready(function() {
	var test = document.getElementById('test');
		var myArray = {
                             "text1": [
                                   "txt":"Hello, hello, hello..",
                                   "x": "0",
                                   "y": "50",
                                   "txt":"is there anybody in there?",
                                   "x": "0",
                                   "y": "100",
                                   "txt":"just nod if you can hear me",
                                   "x": "0",
                                   "y": "150",
                        } ;
	for ( var i=0 ; i < myArray.text1.length ; i++) {
	      var linecontainer = document.createElement('div'),
		  letters = myArray.text1[i].txt.split("");
	      linecontainer.id = 'line'+i
	      linecontainer.className = 'textlineholder';
    	      for ( var k=0 ; k < letters.length ; k++){
                    textdiv = document.createElement('div');	  
        	    textdiv.id = 'textdiv'+i+k;
    		    textdiv.innerHTML = letters[k];
    		    textdiv.className = 'letter';	       
    TweenMax.staggerTo($('.letter'), 5.5, { opacity:1});  					  

See the Pen qOYZmy by ohavben (@ohavben) on CodePen

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  • Solution

Actually changed it to a time line for better control and continouse animation.

var elements = document.getElementsByClassName('letter'),
	 tl = new TimelineMax({repeat:-1, repeatDelay:2});
		 tl.add( TweenMax.set(elements, {opacity:0}));
		 tl.add( TweenMax.staggerTo(elements, 0.25, { opacity: 1}, 0.25));		        
                 tl.add( TweenMax.to(elements, 3, {opacity:0}));

         elements.animation = tl;	        
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I don't know if you know about the SplitText gsap plugin. But I assume it does all the heavy lifting for what you are trying to achieve?


Here's a SplitText demo: 

See the Pen gFHza by GreenSock (@GreenSock) on CodePen


If you aren't a member of Club GreenSock, but still want to take the SplitText plugin for a drive, you can use the CodePen specific demo plugins here:

See the Pen OPqpRJ by GreenSock (@GreenSock) on CodePen


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Hello oby1


The add() method is really best when used with nested timelines. But since your just using one timeline than You should change your code to the below:

var elements = document.getElementsByClassName('letter'),
var tl = new TimelineMax({repeat:-1, repeatDelay:2}; // always make sure to declare your variable with 'var'

tl.set(elements, {opacity:0}));
tl.staggerTo(elements, 0.25, { opacity: 1}, 0.25);		        
tl.to(elements, 3, {opacity:0});

elements.animation = tl;	

Keep in mind that when you use the add() method, the default is to add the tween at the end of the timeline. Also you should always as best practice declare your variables with var so you don't have issues when the browsers JavaScript parses your code.


Also instead of using opacity  you can use autoAlpha.


autoAlpha is part of the GSAP CSSPlugin and will help with performance of your animation.

  • Identical to opacity except that when the value hits 0 the visibility property will be set to "hidden" in order to improve browser rendering performance and prevent clicks/interactivity on the target. When the value is anything other than 0, visibility will be set to "inherit". It is not set to "visible" in order to honor inheritance (imagine the parent element is hidden - setting the child to visible explicitly would cause it to appear when that's probably not what was intended). And for convenience, if the element's visibility is initially set to "hidden" and opacity is 1, it will assume opacity should also start at 0. This makes it simple to start things out on your page as invisible (set your css visibility:hidden) and then fade them in whenever you want.
//fade out and set visibility:hidden
TweenLite.to(element, 2, {autoAlpha:0});
//in 2 seconds, fade back in with visibility:visible
TweenLite.to(element, 2, {autoAlpha:1, delay:2});

Hope this helps! :)

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