<!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 x = window.prompt("请输入一个数字"); function foo(X) { var res = 4 * Math.pow(X, 2) + 3 * X + 2; console.log(res); } foo(x); </script> </body> </html>
