<!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> // { 代码块 } // console.log("你好"); function fn1() { var a = 10; console.log(a); } fn1() </script> </body> </html>
