利用jQuery实现一个幻灯片演示效果,但是这个jQuery Slide Show效果的jQuery代码,写的很优雅,思路也很清晰。
mySlider.js 插件
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| (function($) {
$.fn.mySlider = function(vars) {
var timeOut = vars.timeOut || 4000;
var capOpacity = vars.captionOpacity || .7;
var element = this;
var fxDuration = timeOut/6;
var items = $("#" + element[0].id + " li");
var captions = $("#" + element[0].id + " li div");
items.css('display','none');
captions.css({
'opacity': capOpacity,
'display': 'none'
});
var fadeIn = function(no) {
$(items[no]).fadeIn(fxDuration, function() {
$(captions[no]).fadeIn(fxDuration, function() {
setTimeout(function() {fadeOut(no);}, timeOut);
});
});
}
var fadeOut = function(no) {
$(captions[no]).fadeOut(fxDuration, function() {
$(items[no]).fadeOut(fxDuration, function() {
fadeIn(calcNext(no));
});
});
}
var calcNext = function(no) {
return ((no + 1) == items.length) ? 0 : (no + 1);
}
fadeIn(0);
}
})(jQuery); |
(function($) {
$.fn.mySlider = function(vars) {
var timeOut = vars.timeOut || 4000;
var capOpacity = vars.captionOpacity || .7;
var element = this;
var fxDuration = timeOut/6;
var items = $("#" + element[0].id + " li");
var captions = $("#" + element[0].id + " li div");
items.css('display','none');
captions.css({
'opacity': capOpacity,
'display': 'none'
});
var fadeIn = function(no) {
$(items[no]).fadeIn(fxDuration, function() {
$(captions[no]).fadeIn(fxDuration, function() {
setTimeout(function() {fadeOut(no);}, timeOut);
});
});
}
var fadeOut = function(no) {
$(captions[no]).fadeOut(fxDuration, function() {
$(items[no]).fadeOut(fxDuration, function() {
fadeIn(calcNext(no));
});
});
}
var calcNext = function(no) {
return ((no + 1) == items.length) ? 0 : (no + 1);
}
fadeIn(0);
}
})(jQuery);
初始化mySlider
$(document).ready(function() {
$("#slider").mySlider({
timeOut: 4000,
captionOpacity: .7
});
}); |
$(document).ready(function() {
$("#slider").mySlider({
timeOut: 4000,
captionOpacity: .7
});
});
Html Code
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| <ul id="slider">
<li style="display: none;">
<img src="image1.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image2.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="bottom">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image3.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image4.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="bottom">
Some nice text captions..
</div>
</li>
<li style="opacity: 0.00000555164;">
<img src="image5.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
</ul> |
<ul id="slider">
<li style="display: none;">
<img src="image1.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image2.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="bottom">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image3.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
<li style="display: none;">
<img src="image4.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="bottom">
Some nice text captions..
</div>
</li>
<li style="opacity: 0.00000555164;">
<img src="image5.jpg" alt="">
<div style="opacity: 0.7; display: none;" class="top">
Some nice text captions..
</div>
</li>
</ul>
Css Code
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| ul#slider {
width: 363px;
height: 198px;
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
}
ul#slider li {
float: left;
position: relative;
/*display: none;*/
}
ul#slider li div {
position: absolute;
width: 343px;
background-color: #000;
color: #fff;
left: 0;
/*display: none;*/
padding: 10px;
}
.top {
top: 0;
}
.bottom {
bottom: 0;
} |
ul#slider {
width: 363px;
height: 198px;
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
}
ul#slider li {
float: left;
position: relative;
/*display: none;*/
}
ul#slider li div {
position: absolute;
width: 343px;
background-color: #000;
color: #fff;
left: 0;
/*display: none;*/
padding: 10px;
}
.top {
top: 0;
}
.bottom {
bottom: 0;
}
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