Node.js 节点Js无法创建对象

我试图用node js创建一个对象，但出于某种原因，它不接受/记住我正在使用的代码：

    users-mbp:~ user$ node
> var author = { firstName: Alex, lastName: Snail, "age: 28", favoritefood: ['lasagna', 'pizza']};
... author
... author.lastName
... c
> author.lastName
ReferenceError: author is not defined
> var author =  { firstName: 'Alex', lastName: 'Snail', age: '28', favoriteFood { 'lasagna', 'pizza'}
... author
... 
> author
ReferenceError: author is not defined
> author.lastName
ReferenceError: author is not defined

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缺少引号的对象有误。对，应该是这样的

var author = { firstName: 'Alex', lastName: 'Snail', age: '28', favoritefood: ['lasagna', 'pizza']}

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缺少引号的对象有误。右边的应该是这样的

var author={firstName:'Alex'，lastName:'Snail'，age:'28'，favoritefood:['lasagna'，'pizza']}