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console 命令行工具 X clear

                    
>
console
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title></title>
</head>
<body>
  <svg id='box' width='800' height='400' version='1.1' xmlns="http://www.w3.org/2000/svg">
    <rect width='100' height='100' style='fill:rgb(255,0,0))'>
      <set attributeName='x' attributeTYpe='XML' to='100' begin='4s'></set>
      <animate attributeName='x' attributeTYpe='XML' begin='0s' dur='4s' from='0' to='300'></animate>
      <animate attributeName='y' attributeTYpe='XML' begin='0s' dur='4s' from='0' to='0'></animate>
      <animateTransform attributeName='transform' begin='0s' dur='4s' type='scale' from='1' to='2'repeatCount='1'></animateTransform>
      <animateMotion path='M10,80 q100,120 120,20 q140,-50 160,0' begin='0' dur='4' repeatCount='1'></animateMotion>
    </rect>
  </svg>
</body>
</html>
* {
  margin: 0;
  padding: 0;
}