Méthode jQuery Effect fadeTo()

Modifiez progressivement l'opacité de tous les éléments <p> :

$("button").click(function(){
$("p").fadeTo(1000, 0.4);
});

Définition et utilisation

La méthode fadeTo() modifie progressivement l'opacité, pour les éléments sélectionnés, à une opacité spécifiée (effet de fondu).

$(selector).fadeTo(speed,opacity,easing,callback)

Parameter	Description
speed	Required. Specifies the speed of the fading effect. Possible values: milliseconds "slow" "fast"
opacity	Required. Specifies the opacity to fade to. Must be a number between 0.00 and 1.00
easing	Optional. Specifies the speed of the element in different points of the animation. Default value is "swing" Possible values: "swing" - moves slower at the beginning/end, but faster in the middle "linear" - moves in a constant speed Tip: More easing functions are available in external plugins
callback	Optional. A function to be executed after the fadeTo() method is completed To learn more about callback, visit our jQuery Callback chapter

de rappel Comment utiliser le paramètre de rappel lors du fondu entrant et sortant d'un élément.