仿淘宝首页jquery
焦点图仿淘宝首页jquery焦点图是一款基于jQuery实现的仿淘宝网站首页的轮播焦点图代码。jquery左右箭头图片切换索引按钮
所属专题:焦点图代码
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
var $banner=$('.banner');
var $banner_ul=$('.banner-img');
var $btn=$('.banner-btn');
var $btn_a=$btn.find('a')
var v_width=$banner.width();
var page=1;
var timer=null;
var btnClass=null;
var page_count=$banner_ul.find('li').length;//把这个值赋给小圆点的个数
var banner_cir="<li class='selected' href='#'><a></a></li>";
for(var i=1;i<page_count;i++){
//动态添加小圆点
banner_cir+="<li><a href='#'></a></li>";
}
$('.banner-circle').append(banner_cir);
var cirLeft=$('.banner-circle').width()*(-0.5);
$('.banner-circle').css({'marginLeft':cirLeft});
$banner_ul.width(page_count*v_width);
function move(obj,classname){
//手动及自动播放
if(!$banner_ul.is(':animated')){
if(classname=='prevBtn'){
if(page==1){
$banner_ul.animate({left:-v_width*(page_count-1)});
page=page_count;
cirMove();
}
else{
$banner_ul.animate({left:'+='+v_width},"slow");
page--;
cirMove();
}
}
else{
if(page==page_count){
$banner_ul.animate({left:0});
page=1;
cirMove();
}
else{
$banner_ul.animate({left:'-='+v_width},"slow");
page++;
cirMove();
}
}
}
}
function cirMove(){
//检测page的值,使当前的page与selected的小圆点一致
$('.banner-circle li').eq(page-1).addClass('selected')
.siblings().removeClass('selected');
}
$banner.mouseover(function(){
$btn.css({'display':'block'});
clearInterval(timer);
}).mouseout(function(){
$btn.css({'display':'none'});
clearInterval(timer);
timer=setInterval(move,3000);
}).trigger("mouseout");//激活自动播放
$btn_a.mouseover(function(){
//实现透明渐变,阻止冒泡
$(this).animate({opacity:0.6},'fast');
$btn.css({'display':'block'});
return false;
}).mouseleave(function(){
$(this).animate({opacity:0.3},'fast');
$btn.css({'display':'none'});
return false;
}).click(function(){
//手动点击清除计时器
btnClass=this.className;
clearInterval(timer);
timer=setInterval(move,3000);
move($(this),this.className);
});
$('.banner-circle li').live('click',function(){
var index=$('.banner-circle li').index(this);
$banner_ul.animate({left:-v_width*index},'slow');
page=index+1;
cirMove();
});
});
</script>