<!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> // 计算三角形面积 // 需求：输入宽 输入高 弹出三角形面积 </script> </body> </html>
