<!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 a = 10; setTimeout(function(){ console.log(a) }, 1000); a++; console.log(a) </script> </body> </html>
