jQuery一個圖片切換的插件_jquery

以下是參數說明：

參數名稱	描述
delay	圖片切換速度，單位毫秒
maskOpacity	遮罩層透明度，1為不透明，0為全透明
numOpacity	數字按鈕透明度，1為不透明，0為全透明
maskBgColor	遮罩層背景色
textColor	標題字體顏色
numColor	數字按鈕字體顏色
numBgColor	數字按鈕背景色
alterColor	數字按鈕選中項字體顏色
alterBgColor	數字按鈕選中項背景顏色

插件代碼及調用
- 插件名稱：ImageScroll
代碼如下:
(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 = $("").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 = $("").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 = $("").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 = $("").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++)
{
$("").html(i+1)
.css({"float":"left", "width":"20px", "height":"20px", "text-align":"center", "background-color":options.numBgColor, "margin":"0px 2px 2px 0px", "cursor":"pointer", "line-height":"20px", "color":options.numColor})
.mouseover(function() {
if(_timer) {
clearInterval(_timer);
}
}).mouseout(function() {
_timer = setInterval(alter, options.delay);
}).click(function(){
numClick($(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);

- 調用代碼
代碼如下:

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