.flip .number0:before, .flip .number0:after { content: "0"; } .flip .number1:before, .flip .number1:after { content: "1"; } .flip .number2:before, .flip .number2:after { content: "2"; } .flip .number3:before, .flip .number3:after { content: "3"; } .flip .number4:before, .flip .number4:after { content: "4"; } .flip .number5:before, .flip .number5:after { content: "5"; } .flip .number6:before, .flip .number6:after { content: "6"; } .flip .number7:before, .flip .number7:after { content: "7"; } .flip .number8:before, .flip .number8:after { content: "8"; } .flip .number9:before, .flip .number9:after { content: "9"; }将这段JavaScript代码在保持原有功能的基础上用for循环进行简化缩短

可以使用以下代码进行简化缩短：

const numbers = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"];

for (let i = 0; i < numbers.length; i++) {
  const number = numbers[i];
  const selector = `.flip .number${i}:before, .flip .number${i}:after`;
  const style = `content: "${number}";`;
  
  document.styleSheets[0].insertRule(`${selector} { ${style} }`, 0);
}

这样可以用一个数组来存储数字，然后使用循环来动态生成选择器和样式，并且把它们插入到页面样式表中。