1.2.3.2.物件與物件實體
當JavaScript engine 看到大括號時, 就會假設在創造一個物件
物件實體 (object literals)
//物件實體語法 var person = { firstname: 'Tony', lastName: 'Alicea', address: { street: "111 main st."; city = "new york"; } }; function greet(person){ console.log('Hi' + person.firstname); } greet(Tony); greet({firstname: 'Mary', lastname: 'Doe'});
因為JavaScript code並不是真正被處理, 而是經過JavaScript engine處理過, 因此可以有多種寫法
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