源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>享学课堂</title> </head> <body> <h1>JavaScript 表达式</h1> <p>表达式计算一个结果.</p> <p id="demo"></p> <script> document.getElementById("demo").innerHTML = 5 * 10; </script> </body> </html>
运行结果