源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>享学课堂</title> </head> <body> <p id="demo"></p> <script> var answer1 = "It's alright"; var answer2 = "He is called 'Johnny'"; var answer3 = 'He is called "Johnny"'; document.getElementById("demo").innerHTML = answer1 + "<br>" + answer2 + "<br>" + answer3; </script> </body> </html>
运行结果