源代碼
點擊運行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>教程</title> </head> <body> <p>全局變量在任何腳本和函數內均可訪問。</p> <p id="demo"></p> <script> var carName = "Volvo"; myFunction(); function myFunction() { document.getElementById("demo").innerHTML = "我可以顯示 " + carName; } </script> </body> </html>
運行結果