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Bug-fix #798

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Bug-fix #798

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4 changes: 2 additions & 2 deletions page/effects/intro-to-effects.md
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Original file line number Diff line number Diff line change
Expand Up @@ -92,7 +92,7 @@ A common mistake when implementing jQuery effects is assuming that the execution

```
// Fade in all hidden paragraphs; then add a style class to them (not quite right)
$( "p.hidden" ).fadeIn( 750 ).addClass( "lookAtMe" );
$( "p:hidden" ).fadeIn( 750 ).addClass( "lookAtMe" );
```

It is important to realize that `.fadeIn()` above only *kicks off* the animation. Once started, the animation is implemented by rapidly changing CSS properties in a JavaScript `setInterval()` loop. When you call `.fadeIn()`, it starts the animation loop and then returns the jQuery object, passing it along to `.addClass()` which will then add the `lookAtMe` style class while the animation loop is just getting started.
Expand All @@ -101,7 +101,7 @@ To defer an action until after an animation has run to completion, you need to u

```
// Fade in all hidden paragraphs; then add a style class to them (correct with animation callback)
$( "p.hidden" ).fadeIn( 750, function() {
$( "p:hidden" ).fadeIn( 750, function() {
// this = DOM element which has just finished being animated
$( this ).addClass( "lookAtMe" );
});
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