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飞舞的泡泡球
「flasky」
Original
522 people have browsed it

飞舞的泡泡球
效果图如下

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Title</title>
  6.     <style>
  7.         .container{
  8.             width: 800px;
  9.             height: 800px;
  10.             background-color: #eee;
  11.             margin: 60px auto;
  12.             box-shadow: 5px 8px 2px #bdbdbd inset;
  13.             border: 1px solid #666;
  14.             position: relative;
  16.         }
  17.         .but{
  18.             margin: 0px auto;
  19.             width: 800px;
  20.         }
  22.         .ball{
  23.             border-radius: 50%;
  24.             /*background-color: rgb(157 110 233);*/
  25.             position: absolute;
  26.         }
  28.     </style>
  29. </head>
  30. <body>
  31.     <div class="container" id="cont">
  32.     </div>
  33.         <div class="but"><button id="btn" onclick="pball()">弹球</button></div>
  36.     <script>
  37.         var comobj=document.getElementById('cont');
  39.         function pball(){
  40.             var myWidth = Math.floor(Math.random()*30+10);
  41.             var speY = Math.floor(Math.random()*10-6);
  42.             var speX = Math.floor(Math.random()*10-6);
  43.             var myball=document.createElement("div");
  45.             var mycolorR = Math.floor(Math.random()*255);
  46.             var mycolorB = Math.floor(Math.random()*255);
  47.             var mycolorG = Math.floor(Math.random()*255);
  49.             var contW = comobj.clientWidth;
  50.             var contH = comobj.clientHeight;
  52.             // console.log(mycolorR+','+mycolorG)
  53.             myball.style.backgroundColor = `rgb(${mycolorR} ${mycolorB} ${mycolorG})`;
  54.             myball.style.width = `${myWidth}px`;
  55.             myball.style.height = `${myWidth}px`;
  56.             // console.log(`rgb(${mycolorR} ${mycolorB} ${mycolorG})`);
  58.             myball.className='ball';
  59.             comobj.appendChild(myball);
  60.             myball.style.top = `${contW/2}px`;
  61.             myball.style.left =`${contH/2}px`;
  62.             // console.log( `${comobj.clientWidth/2}px`)
  65.             setInterval(function () {
  67.                 var  oftop = myball.offsetTop;
  68.                 var  ofleft= myball.offsetLeft;
  69.                 var myWid = myball.offsetWidth;
  70.                 var myhei = myball.offsetHeight;
  71.                 var tp= contH-myhei;
  72.                 var lp = contW-myWid;
  74.                 var opSy = 0;
  75.                 var lpSx = 0;
  77.                 opSy = oftop + speY;
  78.                 lpSx = ofleft + speX;
  80.                 if (opSy<=0)
  81.                 {
  82.                     myball.style.top='0px';
  83.                     speY = ~speY;
  84.                 } else if (opSy>=tp) {
  85.                     myball.style.top = `${tp}px`;
  86.                     speY = ~speY;
  87.                 }else {
  88.                     myball.style.top = `${opSy}px`;
  89.                 }
  92.                 if (lpSx<=0)
  93.                 {
  94.                     myball.style.left='0px';
  95.                     speX = ~speX;
  96.                 }else if (lpSx>=lp) {
  97.                     myball.style.left = `${lp}px`;
  98.                     speX = ~speX;
  99.                 }else {
  100.                     myball.style.left = `${lpSx}px`;
  101.                 }
  104.             },50)
  109.         }
  110.     </script>
  111. </body>
  112. </html>
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