源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>享学课堂</title> </head> <body> <h1>JavaScript 变量</h1> <p>创建一个变量，给它赋值，并显示它:</p> <p id="demo"></p> <script> var carName = "Volvo"; document.getElementById("demo").innerHTML = carName; </script> </body> </html>
运行结果