This article is divided into previous and next articles. I share eight classic effects of js focus carousel for your reference. The specific content is as follows
Basic layout:
<div id="box"> <ul id="ul"> <li style='display:block;'><img src="images/1.jpg"></li> <li><img src="images/2.jpg"></li> <li><img src="images/3.jpg"></li> <li><img src="images/4.jpg"></li> <li><img src="images/5.jpg"></li> </ul> <ol id='ol'> <li class='active'>1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> </ol> </div>
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1. Normal focus map
window.onload=function(){ var oUl=document.getElementById('ul'); var aLi_u=oUl.getElementsByTagName('li'); var oOl=document.getElementById('ol'); var aLi_o=oOl.getElementsByTagName('li'); for(var i=0;i<aLi_o.length;i++){ aLi_o[i].index=i; aLi_o[i].onmouseover=function(){ for(var i=0;i<aLi_o.length;i++){ aLi_o[i].className=''; aLi_u[i].style.display='none'; } this.className='active'; // console.log(aLi_o[this.index]); aLi_u[this.index].style.display='block'; } } }Reproduction: Picture omitted
2. Fade effect
var oUl=document.getElementById('ul');var aLi_u=oUl.getElementsByTagName('li');var oOl=document.getElementById('ol');var aLi_o=oOl.getElementsByTagName('li');for(var i=0;i<aLi_o.length;i++){ aLi_o[i].index=i; aLi_o[i].onmouseover=function(){ for(var i=0;i<aLi_o.length;i++){ aLi_o[i].className=''; aLi_u[i].style.display='none'; aLi_u[i].style.filter='alpha(opacity=0)'; aLi_u[i].style.opacity=0; } this.className='active'; aLi_u[this.index].style.display='block'; startMove(aLi_u[this.index],{opacity:100}); };}Reproduction image:
3. Scroll up effect:
var oUl=document.getElementById('ul');var aLi_u=oUl.getElementsByTagName('li');var oOl=document.getElementById('ol');var aLi_o=oOl.getElementsByTagName('li');var LiHeight=aLi_u[0].offsetHeight;for(var i=0;i<aLi_o.length;i++){ aLi_o[i].index=i; aLi_o[i].onmouseover=function(){ for(var i=0;i<aLi_o.length;i++){ aLi_o[i].className=''; this.className='active'; startMove(oUl,{top:-this.index*LiHeight}); } };}Reproduction image:
4. Scroll up and down regularly:
window.onload=function(){ var oBox=document.getElementById('box'); var oUl=document.getElementById('ul'); var aLi_u=oUl.getElementsByTagName('li'); var oOl=document.getElementById('ol'); var aLi_o=oOl.getElementsByTagName('li'); var LiHeight=aLi_u[0].offsetHeight; var iNow=0;//Current index var timer=null;//Timer for(var i=0;i<aLi_o.length;i++){ aLi_o[i].index=i; aLi_o[i].onmouseover=function(){ for(var i=0;i<aLi_o.length;i++){ aLi_o[i].className=''; this.className='active'; //Build relationship: very important iNow=this.index; startMove(oUl,{top:-this.index*LiHeight}); } }; //Open timer timer=setInterval(toRun,2000); oBox.onmouseover=function(){ clearInterval(timer); }; oBox.onmouseout=function(){ timer=setInterval(toRun,2000); }; //Timed function function toRun(){ if(iNow==aLi_o.length-1){ iNow=0; }else{ iNow++; } for(var i=0;i<aLi_o.length;i++){ aLi_o[i].className=''; } aLi_o[iNow].className='active'; startMove(oUl,{top:-iNow*LiHeight}); }};Reproduction image:
The above is all the content of this article. I hope it will be helpful to everyone's learning. I also hope that everyone will support Wulin.com and continue to pay attention to more exciting focus carousels.