W3School TIY Editor
W3School 在线教程
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暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var person = new Object(); person.firstName = "Bill"; person.lastName = "Gates"; person.age = 50; person.eyeColor = "blue"; document.getElementById("demo").innerHTML = person.firstName + " is " + person.age + " years old."; </script> </body> </html>