<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> *{ margin: 0; padding:0; list-style: none; } .big{ width: 200px; height: 200px; margin:100px auto; } ul{ width: 100px; height: 100px; border: 1px solid black; position: relative; overflow: hidden; } li{ width: 100px; height: 100px; line-height: 100px ; text-align: center; } .color1{ background: red; position: absolute; } .color2{ background: yellow; position: absolute; } .color3{ background: pink; position: absolute; } .color4{ background: green; position: absolute; } .input1{ width: 30px; height: 30px; margin: 10px ; position: absolute; top:150px ; left:550px; } .input2{ width: 30px; height: 30px; margin: 10px ; position: absolute; top:150px ; left:590px; } </style> </head> <body> <div> <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul> <input type="button" value="1"> <input type="button" value="2"> </div> <script> window.onload=function () { var oIpt1=document.getElementsByTagName("input")[0]; var oIpt2=document.getElementsByTagName("input")[1]; var allColor=document.getElementsByTagName("li"); oIpt2.addEventListener("click",function () { for(var i=0;i<allColor.length;i++){ allColor[i].style.top=parseFloat(allColor[i].style.top)-100+"px"; allColor[i].style.transition=1+"s" if(allColor[i].style.top==-300+"px"){ allColor[i].style.top=100+"px" allColor[i].style.transition=0+"s" } } },false) oIpt1.addEventListener("click",function () { for(var i=0;i<allColor.length;i++){ allColor[i].style.top=parseFloat(allColor[i].style.top)+100+"px"; allColor[i].style.transition=1+"s" if (allColor[i].style.top==400+"px"){ allColor[i].style.top=0+"px" allColor[i].style.transition=0+"s" } } },false) } </script> </body> </html>
这里使用在线HTML/CSS/JavaScript代码运行工具：测试上述代码，可得如下运行结果：
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