[英]Separating multiple data from a JSON file using JavaScript
I am trying to display the values from a JSON file fetched from an API using this code.我正在尝试使用此代码显示从 API 获取的 JSON 文件中的值。
const query = 'chicken';
const uri = 'https://trackapi.nutritionix.com/v2/search/instant?query=' + query;
let appid = new Headers();
appid.append('x-app-id', '19421259')
let appkey = new Headers();
appid.append('x-app-key', '54a4e6668518084478d9025d8a5e32a2')
let req = new Request(uri, {
method: 'GET',
headers: appid,
appkey,
});
fetch(req)
.then((response) => {
if (response.ok) {
return response.json();
} else {
throw new Error('BAD HTTP stuff');
}
})
.then((jsonData) => {
console.log(jsonData);
var jsonString = JSON.stringify(jsonData);
document.write(jsonString);
})
.catch((err) => {
console.log('ERROR', err.message);
});
It successfully returns the JSON and makes it into a string however I don't know how I should separate them as the JSON contains multiple data (eg a search for chicken returns multiple chicken meals with varying brands and cooking types) shown below:它成功地返回了 JSON 并将其变成了一个字符串,但是我不知道我应该如何将它们分开,因为 JSON 包含多个数据(例如,搜索鸡肉会返回多种不同品牌和烹饪类型的鸡肉饭),如下所示:
{
"common": [{
"food_name": "chicken",
"serving_unit": "oz",
"tag_name": "chicken",
"serving_qty": 3,
"common_type": null,
"tag_id": "9",
"photo": {
"thumb": "https://d2xdmhkmkbyw75.cloudfront.net/9_thumb.jpg"
},
"locale": "en_US"
}, {
"food_name": "chickensalad",
"serving_unit": "cup",
"tag_name": "chicken salad",
"serving_qty": 0.5,
"common_type": null,
"tag_id": "1420",
"photo": {
"thumb": "https://d2xdmhkmkbyw75.cloudfront.net/1420_thumb.jpg"
},
"locale": "en_US"
}, {
"food_name": "chicken salad",
"serving_unit": "cup",
"tag_name": "chicken salad",
"serving_qty": 0.5,
"common_type": null,
"tag_id": "1420",
"photo": {
"thumb": "https://d2xdmhkmkbyw75.cloudfront.net/1420_thumb.jpg"
},
"locale": "en_US"
}, {
"food_name": "chicken broth",
"serving_unit": "cup",
"tag_name": "broth chicken",
"serving_qty": 1,
"common_type": null,
"tag_id": "3336",
"photo": {
"thumb": "https://d2xdmhkmkbyw75.cloudfront.net/3336_thumb.jpg"
},
"locale": "en_US"
}, {
"food_name": "whole chicken",
"serving_unit": "chicken",
"tag_name": "whole chicken",
"serving_qty": 1,
"common_type": null,
"tag_id": "4025",
"photo": {
"thumb": "https://d2xdmhkmkbyw75.cloudfront.net/4025_thumb.jpg"
},
"locale": "en_US"
}
How should I implement it so that I could display each food and their respective variables separately?我应该如何实现它以便我可以分别显示每种食物及其各自的变量?
If I understood it correctly, you are trying to filter the data obtained as a JSON object so it only includes the foods that are held in "food_name" and "tag_name" properties.如果我理解正确的话,您正在尝试过滤作为 JSON 对象获取的数据,因此它只包含“food_name”和“tag_name”属性中保存的食物。
In this case, you could write a simple function to do the filtering, like so:在这种情况下,您可以编写一个简单的函数来进行过滤,如下所示:
const getFilteredFoodsArray = food => {
food = food.toLowerCase();
return common.filter(
data =>
data.food_name.toLowerCase().includes(food) ||
data.tag_name.toLowerCase().includes(food)
);
};
Then, if you run it like this:然后,如果你像这样运行它:
console.log(getFilteredFoodsArray("chicken"))
Your result would be:你的结果是:
[
{ food_name: 'chicken',
serving_unit: 'oz',
tag_name: 'chicken',
serving_qty: 3,
common_type: null,
tag_id: '9',
photo:
{ thumb: 'https://d2xdmhkmkbyw75.cloudfront.net/9_thumb.jpg' },
locale: 'en_US' },
{ food_name: 'chickensalad',
serving_unit: 'cup',
tag_name: 'chicken salad',
serving_qty: 0.5,
common_type: null,
tag_id: '1420',
photo:
{ thumb: 'https://d2xdmhkmkbyw75.cloudfront.net/1420_thumb.jpg' },
locale: 'en_US' },
{ food_name: 'chicken salad',
serving_unit: 'cup',
tag_name: 'chicken salad',
serving_qty: 0.5,
common_type: null,
tag_id: '1420',
photo:
{ thumb: 'https://d2xdmhkmkbyw75.cloudfront.net/1420_thumb.jpg' },
locale: 'en_US' },
{ food_name: 'chicken broth',
serving_unit: 'cup',
tag_name: 'broth chicken',
serving_qty: 1,
common_type: null,
tag_id: '3336',
photo:
{ thumb: 'https://d2xdmhkmkbyw75.cloudfront.net/3336_thumb.jpg' },
locale: 'en_US' },
{ food_name: 'whole chicken',
serving_unit: 'chicken',
tag_name: 'whole chicken',
serving_qty: 1,
common_type: null,
tag_id: '4025',
photo:
{ thumb: 'https://d2xdmhkmkbyw75.cloudfront.net/4025_thumb.jpg' },
locale: 'en_US' }
]
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