<!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> var num = window.prompt("请输入一个数字")*1; console.log(Math.pow(num,2)); console.log(Math.sqrt(num)); console.log(Math.log(num)); </script> </body> </html>
