带箭头和圆点的轮播
Posted cgj1994
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了带箭头和圆点的轮播相关的知识,希望对你有一定的参考价值。
功能:图片轮播,当鼠标移入图片、圆点和方向键时,停止轮播,移除恢复。
1.首先建立div,并放入图片
css代码 #wai{ width:300px; height: 300px; border: 1px solid red; } img{ width: 100%; height: 100%; display: none; } html代码 <div id="wai" onmouseover="qing()" onmouseout="hui()"> <img src="timg.jpg"/style="display: block;"> <img src="timg1.jpg"/> <img src="timg2.jpg"/> <img src="timg3.jpg"/> </div>
2.添加4个圆点和左右方向
css代码
#dianbox{ height: 15px; width: 70px; position: absolute; border: 1px solid red; left: 120px; top: 270px; } .dian{ width: 10px; height: 10px; border-radius: 50%; margin-left: 4px; border: 1px solid red; float: left; } #lbox{ width: 25px; height: 75px; border: 1px solid red; position: relative; top: -185px; left: 10px; } #rbox{ width: 25px; height: 75px; border: 1px solid red; position: relative; top: -260px; right: -260px; } #l{ width: 25px; height: 25px; border: 2px solid red; border-right: hidden; border-top: hidden; transform: rotate(45deg); margin:20px 10px; } #r{ width: 25px; height: 25px; border: 2px solid red; border-left: hidden; border-bottom: hidden; transform: rotate(45deg); margin:20px -10px; }
html代码
<!--四个点的div-->
<div id="dianbox" >
<div class="dian"style="border-color: green;" onclick="yuan(this,‘0‘)" onmouseover="qing()" onmouseout="hui()">
</div>
<div class="dian" onclick="yuan(this,‘1‘)" onmouseover="qing()" onmouseout="hui()">
</div>
<div class="dian" onclick="yuan(this,‘2‘)" onmouseover="qing()" onmouseout="hui()">
</div>
<div class="dian" onclick="yuan(this,‘3‘)" onmouseover="qing()" onmouseout="hui()">
</div>
</div>
<!--左箭头div-->
<div id="lbox" onclick="zuoyou(-1)"onmouseover="qing()" onmouseout="hui()">
<div id="l">
</div>
</div>
<!--右箭头div-->
<div id="rbox" onclick="zuoyou(1)"onmouseover="qing()" onmouseout="hui()">
<div id="r">
</div>
</div>
3.写js
先定义计时器、写清除计时器函数和恢复计时器函数
定义计时器 var timer = setInterval("lun()",2000); 清除计时器函数 function qing(){ window.clearInterval(timer); } 恢复计时器函数 function hui(){ timer = setInterval("lun()",2000); }
写轮播函数并且换图时圆点变色
function lun(){ // 图片轮播 bs++; var img = document.getElementsByTagName("img"); if(bs>= img.length){ bs=0; } for (i = 0;i<img.length;i++) { img[i].style.display="none"; } img[bs].style.display="block"; // 圆点变色 var dian = document.getElementsByClassName("dian"); for (j = 0;j < img.length;j++) { dian[j].style.borderColor="red"; } dian[bs].style.borderColor="green"; }
鼠标点击圆点实现圆点变色并切换到相应图片
//点圆换图清除定时器 function yuan(x,y){ bs=y; var img = document.getElementsByTagName("img"); for(i = 0;i<img.length;i++){ img[i].style.display="none"; } img[y].style.display="block"; var dian = document.getElementsByClassName("dian"); for (j = 0;j<dian.length;j++) { dian[j].style.borderColor="red"; } x.style.borderColor="green"; }
鼠标点击方向实现切换到上一张或下一张图片并实现圆点的变化
function zuoyou(z){ bs=bs+z; if(bs==4){ bs=0; } if(bs<0){ bs=3; } var img = document.getElementsByTagName("img"); for(i = 0;i<img.length;i++){ img[i].style.display="none"; } img[bs].style.display="block"; var dian = document.getElementsByClassName("dian"); for (j=0;j<dian.length;j++) { dian[j].style.borderColor="red"; } dian[bs].style.borderColor="green"; }
以上是关于带箭头和圆点的轮播的主要内容,如果未能解决你的问题,请参考以下文章