使用 map 访问 React Native 中的嵌套 json [英] Using map to access nested json in react native
本文介绍了使用 map 访问 React Native 中的嵌套 json的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试使用 Array.map()
访问我的 json 结构中的键和数组,但我遗漏了一些东西.这是我的 JSON:
I am trying to access keys and arrays in my json structure with Array.map()
but I'm missing something.
Here's my JSON:
{
"payload": [
{
"id": 1,
"name": "Atta",
"brands": [
{
"id": 118,
"name": "Wheatola",
"subProducts": [
{
"id": 858,
"name": "Chakki Aata",
"minPrice": 52,
"maxPrice": 56
},
{
"id": 2,
"name": "Chakki Atta",
"minPrice": 222,
"maxPrice": 236
}
]
}
]
},
{
"id": 16,
"name": "Rice (Branded)",
"brands": [
{
"id": 25,
"name": "CookStar",
"subProducts": [
{
"id": 1163,
"name": "Best Basmati",
"creditDays": 0,
"minPrice": 5600,
"maxPrice": 5600
},
{
"id": 863,
"name": "Extra Long Grain Basmati",
"creditDays": 0,
"minPrice": 7800,
"maxPrice": 7800
}
]
}
]
}
]
}
我想使用 Array.map()
访问 payload.name, payload.brands.name(s), payloads.brands.subproducts.name(s)
并渲染组件中的值.我如何像使用 map() 一样访问嵌套的 json?预期输出为:
I want to access payload.name, payload.brands.name(s), payloads.brands.subproducts.name(s)
with Array.map()
and render the values in components. How do I access nested json like using map()?
Expected output is:
Atta, Wheatola, Chakki Aata
Atta, Wheatola, Chakki Aata
Rice (Branded), Cookstar, Best Basmati
Rice (Branded), Cookstar, Extra Long Grain Basmati
推荐答案
需要嵌套Array.map()
var data = {
"payload": [
{
"id": 1,
"name": "Atta",
"brands": [
{
"id": 118,
"name": "Wheatola",
"subProducts": [
{
"id": 858,
"name": "Chakki Aata",
"minPrice": 52,
"maxPrice": 56
},
{
"id": 2,
"name": "Chakki Atta",
"minPrice": 222,
"maxPrice": 236
}
]
}
]
},
{
"id": 16,
"name": "Rice (Branded)",
"brands": [
{
"id": 25,
"name": "CookStar",
"subProducts": [
{
"id": 1163,
"name": "Best Basmati",
"creditDays": 0,
"minPrice": 5600,
"maxPrice": 5600
},
{
"id": 863,
"name": "Extra Long Grain Basmati",
"creditDays": 0,
"minPrice": 7800,
"maxPrice": 7800
}
]
}
]
}
]
}
const renderData = data.payload.map((payload) => {
return payload.brands.map(brand =>{
return brand.subProducts.map(subProduct => {
return `${payload.name}, ${brand.name}, ${subProduct.name}`
}).join("\n")
}).join("\n")
}).join("\n")
console.log(renderData);
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