jQuery 一个图片切换的插件

以下是参数说明：  参数名称  描述  delay  图片切换速度，单位毫秒  maskOpacity  遮罩层透明度，1为不透明，0为全透明  numOpacity  数字按钮透明度，1为不透明，0为全透明  maskBgColor  遮罩层背景色  textColor  标题字体颜色  numColor  数字按钮字体颜色  numBgColor  数字按钮背景色  alterColor  数字按钮选中项字体颜色  alterBgColor  数字按钮选中项背景颜色插件代码及调用
- 插件名称：ImageScroll
复制代码 代码如下:
(function($){
$.fn.ImageScroll = function(options) {
var defaults = {
delay: 2000,
maskOpacity: 0.6,
numOpacity: 0.6,
maskBgColor: "#000",
textColor: "#fff",
numColor: "#fff",
numBgColor: "#000",
alterColor: "#fff",
alterBgColor: "#999"
};
options = $.extend(defaults, options);
var _this = $(this).css("display", "none");
var _links = [], _texts = [], _urls = [];
var _list = _this.find("a");
var _timer;
var _index = 0;
_list.each(function(index){
var temp = $(this).find("img:eq(0)");
_links.push($(this).attr("href"));
_texts.push(temp.attr("alt"));
_urls.push(temp.attr("src"));
});
if(_list.length <= 0) {
return;
}
else {
_this.html("");
}
var _width = _this.width();
var _height = _this.height();
var _numCount = _list.length;
var _numColumn = Math.ceil(_numCount / 2);
var _img = $("<a/>").css({"display":"block", "position":"absolute","top":"0px","left":"0px", "z-index":"2", "width":_width+"px", "height":_height+"px", "background":"url("+_urls[0]+")"}).appendTo(_this);
var _mask = $("<div/>").attr("style","opacity:"+options.maskOpacity)
.css({"position":"absolute", "left":"0px", "bottom":"0px", "z-index":"3", "width":_width+"px", "height":"46px", "opacity":options.maskOpacity, "background-color":options.maskBgColor}).appendTo(_this);
var _num = $("<div/>").attr("style","opacity:"+options.numOpacity)
.css({"position":"absolute", "right":"0px", "bottom":"0px", "z-index":"5", "width":_numColumn*22, "opacity":options.numOpacity, "height":"44px"}).appendTo(_this);
var _text = $("<div/>").css({"position":"absolute", "left":"0px", "bottom":"0px", "z-index":"4", "padding-left":"10px", "height":"44px", "line-height":"44px", "color":options.textColor}).html(_texts[0]).appendTo(_this);
for(var i = 0; i < _numCount; i++)
{
$("<a/>").html(i+1)
.css({"float":"left", "width":"20px", "height":"20px", "text-align":"center", "background-color":options.numBgColor, "margin":"0px 2px 2px 0px", "cursor":"pointer", "line-height":"20px", "color":options.numColor})
.mouseover(function() {
if(_timer) {
clearInterval(_timer);
}
}).mouseout(function() {
_timer = setInterval(alter, options.delay);
}).click(function(){
numClick($(this));
}).appendTo(_num);
}
var _tempList = _num.find("a");
function alter() {
if(_index > _numCount-1) {
_index = 0;
}
_tempList.eq(_index).click();
}
function numClick(obj) {
var i = _tempList.index(obj);
_tempList.css({"background-color":options.numBgColor, "color":options.numColor});
obj.css({"background-color":options.alterBgColor, "color":options.alterColor});
_img.attr({"href":_links[i], "target":"_blank"})
.css({"opacity":"0", "background":"url("+_urls[i]+")"})
.animate({"opacity":"1"}, 500);
_text.html(_texts[i]);
_index = i + 1;
}
setTimeout(alter, 10);
_timer = setInterval(alter, options.delay);
_this.css("display", "block");
};
})(jQuery);

- 调用代码
复制代码 代码如下:
<script src="/UploadFiles/2021-04-02/jquery-1.4.2.min.js"><script src="js/jquery.ImageScroll.js"><style type="text/css">
<!--
body {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
}
#scroll { position:relative; width:450px; height:300px; }
-->
</style>
<div id="scroll">
<a href="http://www.baidu.com"><img src="/UploadFiles/2021-04-02/1.jpg"><a href="https://www.jb51.net"><img src="/UploadFiles/2021-04-02/2.jpg"><a href="http://www.codeplex.com"><img src="/UploadFiles/2021-04-02/3.jpg"><a href="http://www.codeproject.com"><img src="/UploadFiles/2021-04-02/4.jpg"><a href="http://sc.jb51.net"><img src="/UploadFiles/2021-04-02/5.jpg"><a href="http://s.jb51.net"><img src="/UploadFiles/2021-04-02/3.jpg"></div>
<script>
$("#scroll").ImageScroll();
</script>

- 运行结果

- 带参数调用
复制代码 代码如下:
<script>
$("#scroll").ImageScroll({delay:500, maskBgColor:"#ff0000"});
</script>

- 运行结果

小结
　　只是个小插件，可定制性可能不是很好，大家随便看看和修改好了，貌似IE8好像还有个小bug，一会修正了再上传，大家有什么bug发现，请回复告诉我，方便我及时修正，有代码上的优化意见，也请告诉我，帮助我这个新人学习，=.=