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− | <html> | + | <!DOCTYPE html> |
− | <img src="https://static.igem.org/mediawiki/2018/ | + | <html lang="en"> |
+ | <head> | ||
+ | <meta charset="UTF-8"> | ||
+ | <title>Document</title> | ||
+ | <script> | ||
+ | window.onload=function() { | ||
+ | // body... | ||
+ | var prev=document.getElementById("prev"); | ||
+ | var next=document.getElementById("next"); | ||
+ | var list=document.getElementById("list"); | ||
+ | var buttons=document.getElementById("buttons").getElementsByTagName("span"); | ||
+ | var container=document.getElementById("container"); | ||
+ | var index=1; | ||
+ | var timer; | ||
+ | var animated=false; | ||
+ | function shownButton(){ | ||
+ | for (var i = 0; i < buttons.length ; i++) { | ||
+ | if( buttons[i].className == 'on'){ | ||
+ | buttons[i].className = ''; | ||
+ | /* prev和next每click一次, | ||
+ | 就会清除一次前一个class为on的span元素, | ||
+ | 所以没有必要再去循环下面的span*/ | ||
+ | break; | ||
+ | } | ||
+ | // 或者直接遍历清除 buttons[i].className=""; | ||
+ | } | ||
+ | buttons[index -1].className="on"; | ||
+ | } | ||
+ | function animate(offset){ | ||
+ | var time = 300; | ||
+ | var inteval = 10; | ||
+ | var speed = offset/(time/inteval); | ||
+ | animated=true; | ||
+ | var newLeft=parseInt(list.style.left) +offset; | ||
+ | function go(){ | ||
+ | if ( (speed > 0 && parseInt(list.style.left) < newLeft) || (speed < 0 && parseInt(list.style.left) > newLeft)) { | ||
+ | list.style.left = parseInt(list.style.left) + speed + 'px'; | ||
+ | setTimeout(go, inteval); | ||
+ | } | ||
+ | else | ||
+ | { | ||
+ | |||
+ | animated=false; | ||
+ | // list.style.left=newLeft+"px"; | ||
+ | if (newLeft >-600) { | ||
+ | list.style.left=-3000+"px"; | ||
+ | }; | ||
+ | if (newLeft <-3000) { | ||
+ | list.style.left=-600+"px"; | ||
+ | }; | ||
+ | } | ||
+ | } | ||
+ | go(); | ||
+ | }; | ||
+ | |||
+ | prev.onclick=function(){ | ||
+ | /*添加一个if判断index为1时,如果继续往前滚的话就让index返回第五个span | ||
+ | 但是当快速点击arrow时会出现一种span点亮延迟的情况。可以尝试把判断index是否大于1或小于5的情况放进 | ||
+ | 判断是否animated的if语句中,先判断能不能点击,再点亮。 | ||
+ | */ | ||
+ | if (!animated) { | ||
+ | if (index==1) { | ||
+ | index=5; | ||
+ | }else { | ||
+ | index -=1; | ||
+ | } | ||
+ | |||
+ | shownButton(); | ||
+ | animate(600); | ||
+ | } | ||
+ | |||
+ | |||
+ | }; | ||
+ | next.onclick=function(){ | ||
+ | |||
+ | |||
+ | |||
+ | if (!animated) { | ||
+ | if (index==5) { | ||
+ | index=1; | ||
+ | }else { | ||
+ | index +=1; | ||
+ | } | ||
+ | shownButton(); | ||
+ | animate(-600); | ||
+ | } | ||
+ | }; | ||
+ | for (var i = 0; i < buttons.length; i++) { | ||
+ | buttons[i].onclick=function(){ | ||
+ | //无关紧要 | ||
+ | if (this.className=="on") { | ||
+ | return; | ||
+ | } | ||
+ | var myIndex=parseInt(this.getAttribute("index")); | ||
+ | var offset=-600*(myIndex-index); | ||
+ | if (!animated) { | ||
+ | animate(offset); | ||
+ | } | ||
+ | index=myIndex; | ||
+ | shownButton(); | ||
+ | |||
+ | } | ||
+ | } | ||
+ | |||
+ | function play(){ | ||
+ | timer=setInterval(function(){ | ||
+ | next.onclick(); | ||
+ | },2000); | ||
+ | } | ||
+ | function stop(){ | ||
+ | clearInterval(timer); | ||
+ | } | ||
+ | play(); | ||
+ | container.onmouseover=stop; | ||
+ | container.onmouseout=play; | ||
+ | } | ||
+ | </script> | ||
+ | <style type="text/css"> | ||
+ | * | ||
+ | { | ||
+ | margin: 0; | ||
+ | padding: 0; | ||
+ | text-decoration: none; | ||
+ | } | ||
+ | body | ||
+ | { | ||
+ | padding: 20px; | ||
+ | } | ||
+ | #container | ||
+ | { position: relative; | ||
+ | overflow: hidden; | ||
+ | |||
+ | width: 600px; height: 400px; border: 3px solid #333; | ||
+ | margin: 0 auto; | ||
+ | } | ||
+ | #list | ||
+ | { position: absolute; | ||
+ | z-index: 1; | ||
+ | width: 4200px; | ||
+ | height: 400px; | ||
+ | } | ||
+ | #list img | ||
+ | { | ||
+ | float: left; | ||
+ | width: 600px; | ||
+ | } | ||
+ | #buttons | ||
+ | { | ||
+ | position: absolute; | ||
+ | z-index: 2; | ||
+ | bottom: 20px; | ||
+ | left: 250px; | ||
+ | width: 100px; | ||
+ | height: 10px; | ||
+ | } | ||
+ | #buttons span | ||
+ | {float: left; | ||
+ | width: 10px; | ||
+ | height: 10px; | ||
+ | margin-right: 5px; | ||
+ | |||
+ | cursor: pointer; | ||
+ | border: 1px solid #fff; | ||
+ | border-radius: 50%; | ||
+ | background: #333; | ||
+ | } | ||
+ | #buttons .on | ||
+ | { | ||
+ | background: orangered; | ||
+ | } | ||
+ | .arrow | ||
+ | {font-size: 36px; | ||
+ | font-weight: bold; | ||
+ | line-height: 39px; | ||
+ | position: absolute; | ||
+ | z-index: 2; | ||
+ | top: 180px; | ||
+ | display: none; | ||
+ | width: 40px; | ||
+ | height: 40px; | ||
+ | |||
+ | cursor: pointer; | ||
+ | text-align: center; | ||
+ | color: #fff; | ||
+ | background-color: RGBA(0,0,0,.3); | ||
+ | } | ||
+ | .arrow:hover | ||
+ | { | ||
+ | background-color: RGBA(0,0,0,.7); | ||
+ | } | ||
+ | #container:hover .arrow | ||
+ | { | ||
+ | display: block; | ||
+ | } | ||
+ | #prev | ||
+ | { | ||
+ | left: 20px; | ||
+ | } | ||
+ | #next | ||
+ | { | ||
+ | right: 20px; | ||
+ | } | ||
+ | </style> | ||
+ | </head> | ||
+ | <body> | ||
+ | |||
+ | <div id="container"> | ||
+ | <div id="list" style="left: -600px;"> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="1"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="1"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="2"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="3"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="4"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="5"/> | ||
+ | <img src="https://static.igem.org/mediawiki/2018/c/c2/T--BIT--9.6test.png" alt="5"/> | ||
+ | </div> | ||
+ | <div id="buttons"> | ||
+ | <span index="1" class="on"></span> | ||
+ | <span index="2"></span> | ||
+ | <span index="3"></span> | ||
+ | <span index="4"></span> | ||
+ | <span index="5"></span> | ||
+ | </div> | ||
+ | <a href="javascript:;" id="prev" class="arrow"><</a> | ||
+ | <a href="javascript:;" id="next" class="arrow">></a> | ||
+ | </div> | ||
+ | </body> | ||
</html> | </html> |
Revision as of 06:50, 9 September 2018
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