| 123456789101112131415161718192021222324252627 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- // 计算pi的近似值
- function Pi(n){
- var sum = 0;
- // Math.pow(-1,n-1)*(1/(2*n-1))
- for(var i=1;i<=n;i++){
- sum += Math.pow(-1,i-1)*(1/(2*i-1));
- }
- return sum*4;
- }
- console.log(Pi(100));
- console.log(Pi(500));
- console.log(Pi(1000));
- console.log(Pi(10000));
- </script>
- </body>
- </html>
|
