이 기사의 예에서는 jQuery를 사용하여 홈 페이지 이미지의 페이드 인 및 페이드 아웃 효과를 얻는 방법을 설명합니다. 참고할 수 있도록 모든 사람과 공유하세요. 구체적인 분석은 다음과 같습니다.
Dangdang 브랜드 스토어 홈페이지의 효과 시연 주소는 http://static.dangdang.com/gm/topic/2270_181320.shtml
입니다.렌더링은 다음과 같습니다.
요구사항:
1. 녹색 부분은 사진 위에 있어야 하며 반투명하게 표시되어야 합니다
2. 마우스가 빨간색 영역으로 이동하면 해당 그림을 전환합니다
3. 홈페이지의 큰 사진 3장 회전
HTML:
<div id="carousel"> <div id="carouselimg" class="content_top"> <div id="imgcontainer" class="slide_panel"> <a target="_blank" href="http://www.baidu.com" mce_href="http://www.baidu.com"><img src="images/brandshop/band_lx_717x280.gif" mce_src="images/brandshop/band_lx_717x280.gif"/></a> <a target="_blank" href="http://www.google.com" mce_href="http://www.google.com"><img src="images/brandshop/band_agz_717x280.gif" mce_src="images/brandshop/band_agz_717x280.gif"/></a> <a target="_blank" href="http://www.dangdang.com" mce_href="http://www.dangdang.com"><img src="images/brandshop/band_qb_717x280.gif" mce_src="images/brandshop/band_qb_717x280.gif"/></a> </div> </div> <div id="carouseltitle"> <ul> <li> <a href="#" mce_href="#">联想 <span>lenovo</span></a> </li> <li> <a href="#" mce_href="#">爱国者 <span>aigo</span></a> </li> <li> <a href="#" mce_href="#">倩碧 <span>CLINIQUE</span></a> </li> </ul> </div>
CSS:
<mce:style type="text/css"><!-- *{ padding:0; margin:0; } #carousel{ border-color:#DFDFDF;border-style:solid;border-width:0 1px 1px; position:relative;/*DO NOT delete this line*/ } #carousel ul{ list-style:none; } #carousel #carouselimg{ position:relative;/*fix ie7 overflow bug*/ overflow:hidden; } #carousel #carouselimg #imgcontainer{ position:absolute; left:0px; top:0px; } #carousel #carouselimg img{ float:left;/*fix ie6 auto-margin bug*/ border:0; /*display:none;*/ } #carousel #carouseltitle{ position:absolute; bottom:0px; } #carousel #carouseltitle ul{ } #carousel #carouseltitle li{ width:239px; height:30px; line-height:30px; font-size:14px; text-align:center; background:#000; color:#FFF; float:left; cursor:pointer; opacity:.6; filter:alpha(opacity=60); } #carousel #carouseltitle .active{ background:#cfaf73; color:#FFF; opacity:.9; filter:alpha(opacity=90); } #carousel #carouseltitle .active a{ color:#000; } #carousel #carouseltitle li a{ text-decoration:none; color:#fff; } #carousel #carouseltitle li a span{ font-family:Arial; } --></mce:style><style type="text/css" mce_bogus="1"> *{ padding:0; margin:0; } #carousel{ border-color:#DFDFDF;border-style:solid;border-width:0 1px 1px; position:relative;/*DO NOT delete this line*/ } #carousel ul{ list-style:none; } #carousel #carouselimg{ position:relative;/*fix ie7 overflow bug*/ overflow:hidden; } #carousel #carouselimg #imgcontainer{ position:absolute; left:0px; top:0px; } #carousel #carouselimg img{ float:left;/*fix ie6 auto-margin bug*/ border:0; /*display:none;*/ } #carousel #carouseltitle{ position:absolute; bottom:0px; } #carousel #carouseltitle ul{ } #carousel #carouseltitle li{ width:239px; height:30px; line-height:30px; font-size:14px; text-align:center; background:#000; color:#FFF; float:left; cursor:pointer; opacity:.6; filter:alpha(opacity=60); } #carousel #carouseltitle .active{ background:#cfaf73; color:#FFF; opacity:.9; filter:alpha(opacity=90); } #carousel #carouseltitle .active a{ color:#000; } #carousel #carouseltitle li a{ text-decoration:none; color:#fff; } #carousel #carouseltitle li a span{ font-family:Arial; } </style>
River Zhang의 fr.carousel.js 소개
FR={ Version:'1.0.0', Author:'River Zhang(zhang_hechuan@hotmail.com)', Lisence:'MIT Lisence' }; FR.Util={ //Replace document.getElementById. $:function(id){ return document.getElementById(id); }, //Replace getElementsByTagName. $$:function(node, tag){ return node.getElementsByTagName(tag); }, creat:function(node,name){ var element=document.createElement(name); node.appendChild(element); return element; }, //Event Binding functions. addEvent:function(eventType,eventFunc,eventObj){ eventObj = eventObj || document; if(window.attachEvent)eventObj.attachEvent("on"+eventType,eventFunc); if(window.addEventListener) eventObj.addEventListener(eventType,eventFunc,false); }, setOpacity:function(obj, value) { if (document.all) obj.style.filter = "alpha(opacity=" + value + ")"; else obj.style.opacity = value / 100; }, setPosition:function(obj, x, y){ var curx=parseInt(obj.style.left); var cury=parseInt(obj.style.top); if(isNaN(curx)) curx=cury=0; var newx=curx+x; var newy=cury+y; obj.style.left=newx+'px'; obj.style.top=newy+'px'; } }; FR.Carousel={ version:'1.1', mode:1, steps:20, period:25, width:300, height:200, bgColor:'#000000', autoSwitch:true, delay:5000, _semaphore:0,/* DO NOT try to modify this value */ start:function(args){ if(typeof(args)!='undefined'){ FR.Carousel.mode=args.mode||FR.Carousel.mode; FR.Carousel.steps=args.steps||FR.Carousel.steps; FR.Carousel.period=args.period||FR.Carousel.period; FR.Carousel.width=args.width||FR.Carousel.width; FR.Carousel.height=args.height||FR.Carousel.height; FR.Carousel.bgColor=args.bgColor||FR.Carousel.bgColor; FR.Carousel.autoSwitch=args.autoSwitch||FR.Carousel.autoSwitch; FR.Carousel.delay=args.delay||FR.Carousel.delay; } FR.Util.addEvent("load",FR.Carousel.run,window); }, run:function(){ FR.Carousel.initialCSS(); FR.Carousel.counter='frimg0'; var carouselimg=FR.Util.$('carouselimg'); var img=FR.Util.$$(carouselimg, 'img'); for(var i=0;i!=img.length;++i){ img[i].id='frimg'+i; if(FR.Carousel.mode==4 || FR.Carousel.mode==5) continue; img[i].style.position="absolute"; img[i].style.left="0 px"; img[i].style.top="0 px"; FR.Util.setOpacity(img[i], 0); } if(FR.Carousel.mode!=4) FR.Util.setOpacity(img[0], 100); if(FR.Carousel.mode==1) bindFunction=function(name){FR.Carousel.fade(FR.Util.$(name), FR.Carousel.steps, FR.Carousel.period);}; else if(FR.Carousel.mode==2) bindFunction=function(name){FR.Carousel.flash(FR.Util.$(name), FR.Carousel.steps, FR.Carousel.period);}; else if(FR.Carousel.mode==3) bindFunction=function(name){FR.Carousel.fadeIntoColor(FR.Util.$(name), FR.Carousel.steps, FR.Carousel.period);}; else if(FR.Carousel.mode==4) bindFunction=function(name){FR.Carousel.scroll(name, FR.Carousel.steps, FR.Carousel.period);}; else if(FR.Carousel.mode==5) bindFunction=function(name){FR.Carousel.crawl(name, FR.Carousel.steps, FR.Carousel.period);}; var carouseltitle=FR.Util.$('carouseltitle'); var li=FR.Util.$$(carouseltitle, 'li'); li[0].className='#carousel #carouseltitle active'; FR.Carousel.autoCarousel(img.length); for(var i=0;i!=li.length;++i){ (function(){ var name='frimg'+i; li[i].onmouseover=function(){ clearInterval(FR.Carousel.s); if(!FR.Carousel._semaphore){ li[FR.Carousel.counter.split('')[FR.Carousel.counter.length-1]].className=''; this.className='#carousel #carouseltitle active'; bindFunction(name); } }; li[i].onmouseout=function(){ FR.Carousel.autoCarousel(img.length); } })(); } }, autoCarousel:function(length){ if(FR.Carousel.autoSwitch){ FR.Carousel.s=setInterval(function(){ var carouseltitle=FR.Util.$('carouseltitle'); var li=FR.Util.$$(carouseltitle, 'li'); li[FR.Carousel.counter.split('')[FR.Carousel.counter.length-1]].className=''; var next=(parseInt(FR.Carousel.counter.split('')[FR.Carousel.counter.length-1])+1)%length; li[next].className='#carousel #carouseltitle active'; name='frimg'+next; bindFunction(name); },FR.Carousel.delay); } }, initialCSS:function(){ var carouselimg=FR.Util.$('carouselimg'); var carousel=FR.Util.$('carousel'); carouselimg.style.width=FR.Carousel.width+"px"; carouselimg.style.height=FR.Carousel.height+"px"; carousel.style.width=FR.Carousel.width+"px"; carousel.style.height=FR.Carousel.height+"px"; if(FR.Carousel.mode==5){ var imgcontainer=FR.Util.$('imgcontainer'); var img=FR.Util.$$(carouselimg, 'img'); var size=img.length*FR.Carousel.width; imgcontainer.style.width=size+"px"; } }, fade:function(obj, steps, speed) { FR.Carousel._semaphore=1; var value1=0; var value2=100; if(obj.id!=FR.Carousel.counter){ var carouselimg=FR.Util.$('carouselimg'); var img=FR.Util.$$(carouselimg, 'img'); for(var i=0;i!=img.length;++i){ if(i!=FR.Carousel.counter.split('')[FR.Carousel.counter.length-1]) FR.Util.setOpacity(img[i], 0); } temp=FR.Carousel.counter; FR.Carousel.counter=obj.id; tempobj=FR.Util.$(temp); var increment=100/steps; FR.Carousel.i=setInterval(function(){ if(value1<=100){ FR.Util.setOpacity(obj,value1); FR.Util.setOpacity(tempobj,value2); value1+=increment; value2-=increment; } else { clearInterval(FR.Carousel.i); FR.Carousel._semaphore=0; } },speed); }else { FR.Carousel._semaphore=0; return; } }, flash:function(obj, steps, speed) { FR.Carousel._semaphore=1; var value1=0; if(obj.id!=FR.Carousel.counter){ var carouselimg=FR.Util.$('carouselimg'); var img=FR.Util.$$(carouselimg, 'img'); for(var i=0;i!=img.length;++i){ FR.Util.setOpacity(img[i], 0); } FR.Carousel.counter=obj.id; var increment=100/steps; FR.Carousel.i=setInterval(function(){ if(value1<=100){ FR.Util.setOpacity(obj,value1); value1+=increment; } else { clearInterval(FR.Carousel.i); FR.Carousel._semaphore=0; } },speed); }else { FR.Carousel._semaphore=0; return; } }, fadeIntoColor:function(obj, steps, speed){ FR.Carousel._semaphore=1; var value1=100; var value2=0; if(obj.id!=FR.Carousel.counter){ var carouselimg=FR.Util.$('carouselimg'); carouselimg.style.backgroundColor=FR.Carousel.bgColor; var img=FR.Util.$$(carouselimg, 'img'); for(var i=0;i!=img.length;++i){ if(i!=FR.Carousel.counter.split('')[FR.Carousel.counter.length-1]) FR.Util.setOpacity(img[i], 0); } temp=FR.Carousel.counter; FR.Carousel.counter=obj.id; tempobj=FR.Util.$(temp); var increment=100/steps; FR.Carousel.i=setInterval(function(){ if(value1>=0){ FR.Util.setOpacity(tempobj,value1); value1-=increment; } else if(value1<0 && value2<=100){ FR.Util.setOpacity(obj,value2); value2+=increment; } else { clearInterval(FR.Carousel.i); FR.Carousel._semaphore=0; } },speed); } else { FR.Carousel._semaphore=0; return; } }, scroll:function(curno, steps, speed){ FR.Carousel._semaphore=1; var ic=FR.Util.$('imgcontainer'); var count=(curno.split('')[curno.length-1]-FR.Carousel.counter.split('')[FR.Carousel.counter.length-1])*FR.Carousel.height; FR.Carousel.counter=curno; var value1=0; var increment=count/steps; FR.Carousel.i=setInterval(function(){ if(Math.abs(value1)<Math.abs(count)){ if(count>0){ FR.Util.setPosition(ic,0,-increment); value1-=increment; } else{ FR.Util.setPosition(ic,0,-increment); value1+=increment; } } else { clearInterval(FR.Carousel.i); FR.Carousel._semaphore=0; } },speed); }, crawl:function(curno, steps, speed){ FR.Carousel._semaphore=1; var ic=FR.Util.$('imgcontainer'); var count=(curno.split('')[curno.length-1]-FR.Carousel.counter.split('')[FR.Carousel.counter.length-1])*FR.Carousel.width; FR.Carousel.counter=curno; var value1=0; var increment=count/steps; FR.Carousel.i=setInterval(function(){ if(Math.abs(value1)<Math.abs(count)){ if(count>0){ FR.Util.setPosition(ic,-increment,0); value1-=increment; } else{ FR.Util.setPosition(ic,-increment,0); value1+=increment; } } else { clearInterval(FR.Carousel.i); FR.Carousel._semaphore=0; } },speed); } };
이미지 회전 효과를 얻을 수 있지만 이미지를 클릭한 후 각 링크 점프는 마지막 이미지의 href가 됩니다
fr.carousel.js를 보면 세 장의 그림을 서로 쌓고 setInterval()을 사용하여 한 그림의 불투명도 값을 1로 설정하는 것이 구현 아이디어인 것으로 나타났습니다. 나머지 2개는 0으로. 그러나 이로 인해 사진을 클릭할 때마다 해당 링크가 맨 위 사진(즉, Clinique의 마지막 사진)이 됩니다.
해결책:
캐러셀 이미지의 Z-인덱스를 설정합니다. 이미지가 표시될 때 해당 상위 노드 의 Z-인덱스는 다른 요소의 Z-인덱스보다 높습니다.
jQuery 구현:
// 判断img轮转,实现a跳转 setInterval(function(){ $("#imgcontainer a").each(function(i){ var img = $(this).children("img"); var op = img.css("opacity"); if(op>0){ img.css("z-index","100"); $(this).css("z-index","100"); }else{ img.css("z-index","0"); $(this).css("z-index","0"); } }) },100);
이 기사가 모든 사람의 jQuery 프로그래밍에 도움이 되기를 바랍니다.