[英]How can I dynamically add a new level to JSON data in JavaScript?
我有兩個 JSON 對象,我想將它們組合成一個 JSON object。此外,我希望將它們作為子級別添加到 output JSON object 中。
JSON Object 1 :
{
Title: '7500',
Year: '2019',
Rated: 'R',
Released: '18 Jun 2020',
Runtime: '93 min',
Genre: 'Action, Drama, Thriller'
}
JSON Object 2 :
{
Title: 'Deadpool',
Year: '2016',
Rated: 'R',
Released: '12 Feb 2016',
Runtime: '108 min',
Genre: 'Action, Adventure, Comedy, Sci-Fi'
}
期望 Output :
responses: {
7500: {
Title: '7500',
Year: '2019',
Rated: 'R',
Released: '18 Jun 2020',
Runtime: '93 min',
Genre: 'Action, Drama, Thriller'
},
Deadpool: {
Title: 'Deadpool',
Year: '2016',
Rated: 'R',
Released: '12 Feb 2016',
Runtime: '108 min',
Genre: 'Action, Adventure, Comedy, Sci-Fi'
}
}
我怎樣才能做到這一點?
您可以將兩個對象添加到一個數組中,然后使用.map()
到 map 每個 object 到[object.Title, object]
形式的數組。 使用這個新數組,您可以使用Object.fromEntries()
將其轉換為 object。通過將對象放入數組中,您可以將其擴展為多個電影對象:
const movies = [{ Title: '7500', Year: '2019', Rated: 'R', Released: '18 Jun 2020', Runtime: '93 min', Genre: 'Action, Drama, Thriller' }, { Title: 'Deadpool', Year: '2016', Rated: 'R', Released: '12 Feb 2016', Runtime: '108 min', Genre: 'Action, Adventure, Comedy, Sci-Fi' }]; const result = Object.fromEntries(movies.map(obj => [obj.Title, obj])); console.log(result);
作為旁注, 沒有 JSON object 這樣的東西。
您可以使用動態屬性名稱( 計算屬性名稱)
const obj1 = { Title: "7500", Year: "2019", Rated: "R", Released: "18 Jun 2020", Runtime: "93 min", Genre: "Action, Drama, Thriller", }; const obj2 = { Title: "Deadpool", Year: "2016", Rated: "R", Released: "12 Feb 2016", Runtime: "108 min", Genre: "Action, Adventure, Comedy, Sci-Fi", }; const obj = { [obj1.Title]: obj1, [obj2.Title]: obj2, }; console.log(obj);
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