img タグが単独の場合は正常に動作します。しかし、フィギュアが親になると、もう機能しません。
なぜこれが問題なのかわかりません。cross() を初期化するためにさまざまなセレクターと $$ 変数のさまざまなセレクターを試しました。
var $$ = $(this).find("img.fade");
そして cross() を実行するには:
$('figure').cross();
また：
$('figure').hover(function() {cross();});
しかし、何もありません。
JSFiddle が動作しないスクリプト: http://jsfiddle.net/cVm7q/
img シングルでの作業: http://jsfiddle.net/2ZfT3/2/
HTML:
<div class="gridContainer clearfix">
<div id="container" class="fluid clearfix">
<figure class="box col1">
<img class="fade" src="http://placehold.it/500/FCDE45/ffffff&text=Original+Image" style="background-image: url(http://placehold.it/500/FCDE45/ffffff&text=Hover+Image)" />
<figcaption>
<div class="cenfig">
<p>
<strong>Headline</strong>
<em>Description of content</em>
</p>
</div>
</figcaption>
</figure>
</div>
</div>
CSS:
img, object, embed, video {
max-width: 100%;
}
.gridContainer {
margin-left: auto;
margin-right: auto;
width: 60%;
}
#container {
clear: both;
float: left;
margin-left: 0;
width: 100%;
display: block;
background: #FFF;
}
figure { display: block; position: absolute; margin: 0; }
.box {
margin: 5px;
padding: 5px;
background: #FFF;
font-size: 11px;
line-height: 1.4em;
float: left;
}
.box h2 {
font-size: 14px;
font-weight: 200;
}
.rtl .box {
float: right;
text-align: right;
direction: rtl;
}
/**** Fluid ****/
#container.fluid {
padding: 0;
}
/* right margin value is 0.1% less than calculated,
to allow for rounding errors in Firefox */
.fluid .box {
background-color: #F8F8F8;
margin: 1% 0.9% 1% 1%;
padding: 1% 1% 1% 1%;
-webkit-transition: background-color 0.3s ease-out;
-moz-transition: background-color 0.3s ease-out;
-ms-transition: background-color 0.3s ease-out;
-o-transition: background-color 0.3s ease-out;
transition: background-color 0.3s ease-out;
}
.fluid .box:hover {
background-color: #D5DE1F;
}
.fluid .box.col1 { width: 30%; }
.fluid .box.col2 { width: 36%; }
.fluid .box.col3 { width: 64%; }
figure span { margin: 0; padding: 0; height: 0;}
.cenfig {
width: 100%;
height: 100%;
display: table;
background: none;
}
.cenfig p {
text-align: center;
display: table-cell;
vertical-align: middle;
width: 100%;
}
figcaption{
opacity: 0;
text-align: center;
position: absolute;
top: 0px;
left: 0px;
width: 100%;
height: 100%;
-webkit-transition: opacity 0.3s ease-out;
-moz-transition: opacity 0.3s ease-out;
-ms-transition: opacity 0.3s ease-out;
-o-transition: opacity 0.3s ease-out;
transition: opacity 0.3s ease-out;
}
figure:hover figcaption {
opacity: 1;
}
figcaption strong,
figcaption em {
display: block;
margin-left: 30px;
margin-right: 30px;
}
figcaption strong {
text-transform: uppercase;
font-size: 2.0em;
font-weight: bold;
line-height: 1.3em;
padding-bottom: 7px;
margin-top: 0;
border-bottom: 1px solid #333;
}
figcaption em {
font-weight: 400;
font-style: normal;
font-size: 1.3em;
margin-top: 10px;
}
/* Floats beinhalten: h5bp.com/q */
.clearfix:before, .clearfix:after { content: ""; display: table; }
.clearfix:after { clear: both; }
.clearfix { zoom: 1; }
JS:
<!--
// wrap as a jQuery plugin and pass jQuery in to our anoymous function
(function ($) {
$.fn.cross = function (options) {
return this.each(function (i) {
// cache the copy of jQuery(this) - the start image
var $$ = $(this);
// get the target from the backgroundImage + regexp
var target = $$.css("background-image").replace(/^url|[\(\)'"]/g, '');
// nice long chain: wrap img element in span
$$.wrap('<span style="position: relative;"></span>')
// change selector to parent - i.e. newly created span
.parent()
// prepend a new image inside the span
.prepend('<img>')
// change the selector to the newly created image
.find(':first-child')
// set the image to the target
.attr('src', target);
// the CSS styling of the start image needs to be handled
// differently for different browsers
if ($.browser.msie || $.browser.mozilla) {
$$.css({
'position' : 'absolute',
'left' : 0,
'background' : '',
'top' : this.offsetTop
});
} else if ($.browser.opera && $.browser.version < 9.5) {
// Browser sniffing is bad - however opera < 9.5 has a render bug
// so this is required to get around it we can't apply the 'top' : 0
// separately because Mozilla strips the style set originally somehow...
$$.css({
'position' : 'absolute',
'left' : 0,
'background' : '',
'top' : "0"
});
} else { // Safari
$$.css({
'position' : 'absolute',
'left' : 0,
'background' : ''
});
}
// similar effect as single image technique, except using .animate
// which will handle the fading up from the right opacity for us
$$.hover(function () {
$$.stop().animate({
opacity: 0
}, 150);
}, function () {
$$.stop().animate({
opacity: 1
}, 150);
});
});
};
})(jQuery);
// note that this uses the .bind('load') on the window object, rather than $(document).ready()
// because .ready() fires before the images have loaded, but we need to fire *after* because
// our code relies on the dimensions of the images already in place.
$(window).bind('load', function () {
$('img.fade').cross();
});
//-->