源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>享学课堂</title> </head> <body> <h1>JavaScript 操作符</h1> <p>连接一个数字和一个字符串，结果是字符串.</p> <p id="demo"></p> <script> var x = 5 + 5; var y = "5" + 5; var z = "Hello" + 5; document.getElementById("demo").innerHTML = x + "<br>" + y + "<br>" + z; </script> </body> </html>
运行结果