1.2.3.1.物件與「點」
var person = new Object(); //純值 person["firstname"] = "Tony"; //兩種方式取值 console.log(person[firstNameProperty]) var firstNameProperty = "firstname"; console.log(person.firstname) //物件 (sub object) person.address = new Object(); person.address.street = "111 main st."; person.address.city = "new york";
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