デモ: http: //jsfiddle.net/6zkSX/5
JavaScript:
(function ($) {
$.fn.slideDown = function (duration) {
// get old position to restore it then
var position = this.css('position');
// show element if it is hidden (it is needed if display is none)
this.show();
// place it so it displays as usually but hidden
this.css({
position: 'absolute',
visibility: 'hidden'
});
// get naturally height
var height = this.height();
// set initial css for animation
this.css({
position: position,
visibility: 'visible',
overflow: 'hidden',
height: 0
});
// animate to gotten height
this.animate({
height: height
}, duration);
};
})(Zepto);
$(function () {
$('.slide-trigger').on('click', function () {
$('.slide').slideDown(2000);
});
});