循环

游鹄君2025年4月30日小于 1 分钟
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>循环</title>
</head>
<body>
  <script type="text/javascript">
  //for循环  九九乘法表
    document.write("<table border='1' width='600'>");
    for (var i = 1; i <=9 ; i++) 
    {
     document.write("<tr align='center'>");
     for (var j = 1; j <=i; j++)
     {
       document.write("<td>");
       document.write(j+"×"+i+"=");
       document.write(j*i);
       document.write("</td>");
 
     };
     document.write("</tr>");
    };
    document.write("</table>");
 
    //while()循环
    var a=1;
    while(a<=10)
    {
     if(a==5)
     {
       break;
     }
     
       document.write(a+"<br/>");                
     a++;
    }
 
    document.write("<br/>");
    //do while 循环
    var b=1;
    while(b<=10)
    {
 
       if(b==5)
       {
         //这里也需要让他自增,
         
         b++;
         continue;
       }
 
     document.write(b+"<br/>");
     
     b++;
    }
 
  </script>
</body>
</html>