Javascript | 将 json object 添加到空 json 数组

Question

我有一个空的 json 阵列。

shoppingCart: []

我有一个 json object。

let product = {"name": "name", "price": "price", "quantity": "quantity", "logoPath": "logoPath"};

我正在尝试将 json object 添加到 json 阵列。

let obj = JSON.parse(state.shoppingCart);
obj.push(product);
state.shoppingCart = JSON.stringify(obj);

我收到了这个错误：

"SyntaxError: Unexpected end of JSON input"

我想像这样将许多 object 添加到 empy 数组中：

shoppingCart: [{id: 1, name: name1}, {id: 2, name: name2}, {id: 3, name: name3}]

我的错误在哪里？

Answer 1

跳过您尝试到JSON.parse() shoppingCart的行

 let shoppingCart = [] let product = { "name": "name", "price": "price", "quantity": "quantity", "logoPath": "logoPath" } //let obj = JSON.parse(shoppingCart) shoppingCart.push(product) shoppingCart = JSON.stringify(shoppingCart) console.log(shoppingCart)

Answer 2

我不确定我是否清楚地理解了这个问题......但如果你想要 json 的 arr 是 go 是这样的：

let arr = []
let myObj1 = {"name": "name1", "price": 1, "quantity": 1, "logoPath": "logoPath1"};
let myObj2 = {"name": "name"2, "price": 2, "quantity": 2, "logoPath": "logoPath2"};
arr.push(myObj1)
arr.push(myObj2)
console.log(arr)

希望这会有所帮助