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一個利用jquery寫的左右輪播圖

最近不是很忙,練習寫了一個輪播圖效果,雖然效果跟功能上貌似是沒問題,但是我認為在許多東西上面都有待改進,在前端這個職位上我還有很遠的路要走,當然要學的東西還有很多,這裡僅僅對自己最近研究js的一個記錄,我相信以後能寫出更好的

将jquery架構的連結跟圖檔替換就可以看到效果了

源代碼如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>輪播圖</title>
<style>
*{margin:0; padding:0;}
body{min-width:320px; font-size:12px;}
h1{font-size:18px;}
h2{font-size:14px}
h4{font-size:12px;}
p{ word-break:break-all; line-height:24px;}
ul,ul li,ol,ol li{list-style:none;}
a{text-decoration:none;}
.clear{clear:both;}
.clearfix:after{ display:block; clear:both; content:"."; visibility:hidden; height:0px;}

#pic_carousel{position:relative;width:1000px;height:350px;overflow:hidden;margin: 0 auto;text-align:center;}
.lunbo_pic{ position:absolute; left:0; top:0; overflow:hidden; text-align:center;}
.lunbo_pic li{ float:left; overflow:hidden;}
.lunbo_pic li a img{ width:1000px; display:block;vertical-align:bottom; border:none;}
.lunbo_curso{ position:absolute; left:50%; width:125px; margin-left:-64px; bottom:0; }
.lunbo_curso a{ background:url(../images/will_yuan.png) no-repeat center; float:left; color:#00F; width:25px; cursor:pointer;height:25px; line-height:25px; display:block; text-align:center;}
.lunbo_curso .small_xz{ color:#F0F;}
.arr{ position:absolute; top:50%; margin-top:-25px; width:30px; height:50px;}
#arr_l{ left:0; background:#CCC;}
#arr_r{ right:0; background:#CCC;}
.tc_kuan{ position:absolute; top:50%; left:50%; margin-top:-25px; margin-left:-100px; width:200px; height:50px; line-height:50px; background:#CCC; color:#000;}
</style>
<script type="text/javascript" src="jquery/jquery-1.8.3.min.js"></script>
</head>
<body>
	<div id="pic_carousel">
    	<ul id="lunbo_pic" class="clearfix lunbo_pic">
        	<li><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" ><img src="images/insco_p1.jpg" /></a></li>
            <li><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" ><img src="images/insco_p2.jpg" /></a></li>
            <li><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" ><img src="images/insco_p3.jpg" /></a></li>
            <li><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" ><img src="images/insco_p1.jpg" /></a></li>
            <li><a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" ><img src="images/insco_p2.jpg" /></a></li>
        </ul>
        <div id="lunbo_curso" class="lunbo_curso">
        	<a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  class="small_xz">1</a>
            <a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >2</a>
            <a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >3</a>
            <a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >4</a>
            <a href="#" target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow"  target="_blank" rel="external nofollow" >5</a>
        </div>
        <span id="arr_l" class="arr"></span>
        <span id="arr_r" class="arr"></span>
    </div>
<script>
	var b_width = 1000; // 大圖的寬度
	var speed = 500; // 圖檔向左移動速度 
	var s_time = 3000 //圖檔自動滾動速度
	var pic_li = $("#lunbo_pic").children("li");
$(document).ready(function(e) {
	var $ul_width= pic_li.width() * pic_li.length; //輪播圖的寬度
	$("#lunbo_pic").width($ul_width);
	var small_width = $(".lunbo_curso>a").width() * $(".lunbo_curso>a").length; 
	$(".lunbo_curso").width(small_width);
	$(".lunbo_curso").css("margin-left",-small_width/2);
});
	
	

$(document).live("click",function(e){
	$target = $(e.target);
	var id = $target.attr('id');	
	if($target.is("a") && $target.parent($("#lunbo_curso")) ){
		$target.addClass("small_xz").siblings().removeClass('small_xz');
		var mar_lf = parseInt($target.index() * b_width);
		$("#lunbo_pic").animate({
			left :	-mar_lf			
		},speed);
	}	
	if(id == "arr_l"){
		prePage();
	}
	if(id == "arr_r"){
		nextPage();
	}
});
	//上一個
	function prePage(){
		if($(".small_xz").index() == 0){
			$("#lunbo_pic").css("left",-4000);
			$("#lunbo_pic").animate({
				"left":	-parseInt(pic_li.length *b_width - b_width)		
			},speed);
			$("#lunbo_curso>a").eq(pic_li.length - 1).addClass("small_xz").siblings().removeClass("small_xz");
			$(".small_xz").index() == pic_li.length - 1;
		}else{
			$("#lunbo_curso>a").eq($(".small_xz").index()-1).addClass("small_xz").siblings().removeClass("small_xz");
			var mar_lf2 = parseInt($("#lunbo_pic").css("left")) + b_width;
			$("#lunbo_pic").animate({
				"left":	mar_lf2		
			},speed);
		}
	}
	//下一個
	function nextPage(){
		if($(".small_xz").index() == pic_li.length -1){
			$("#lunbo_pic").css("left",0);
			/*$("#lunbo_pic").animate({
				"left":	0		
			},speed);*/
			$("#lunbo_curso>a").eq(0).addClass("small_xz").siblings().removeClass("small_xz");
			$(".small_xz").index() == 0;
			
		}else{
			
			$("#lunbo_curso>a").eq($(".small_xz").index() + 1).addClass("small_xz").siblings().removeClass("small_xz");
			var mar_lf2 = parseInt($("#lunbo_pic").css("left")) - b_width;
			$("#lunbo_pic").animate({
				"left":	mar_lf2		
			},speed);
		}	
	}
	
	function picRun(){
		nextPage();
	}
	 intervalTime = setInterval(picRun,s_time);
	
	$("#pic_carousel").on("mouseover",function(){
		clearInterval(intervalTime);
	});
	$("#pic_carousel").on("mouseout",function(){
		intervalTime = setInterval(picRun,s_time);;
	});

</script>
</body>
</html>
           

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