// 构造式
let test = () => {
let obj = new Object();
obj.name = 'leo';
age: 18;
return obj
}
const str = new String('I\'m string')
// 字面量
let test = () => {
let obj = {
name: 'leo',
age: 18
}
return obj
}
const str = 'I\'m string'
