我目前正在研究 Javascript 並堅持在對象中使用 for 循環

Question

[ { name: 'rajesh',
    type: 'varchar',
    length: 50,
    value: '07/21/2020' },
  { name: 'ramesh',
    type: 'varchar',
    length: 50,
    value: '07/21/2020' },
  { name: 'abhi', type: 'int', value: '5' }
 ]

1. 我需要使用 for 循環
2. 我需要像這樣的 output('rajesh':'07/21/2020,'ramesh':'07/21/2020','abhi': 5
3. 需要使用JSON.stringify

Answer 1

可能是這樣的，

 const data = [{ name: 'rajesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'ramesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'abhi', type: 'int', value: '5' } ] const convertedData = Object.fromEntries(data.map(({ name, value }) => [name, value])) console.log(convertedData) console.log(JSON.stringify(convertedData))

采取的步驟：

• 將data轉換為 touple（使用Object.fromEntries進行轉換）
• 從 touples 創建 Object
• 轉換為 JSON

Answer 2

嘗試這個

 let arr = [ { name: 'rajesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'ramesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'abhi', type: 'int', value: '5' } ]; let result = {}; for(i= 0; i < arr.length; i++){ result[arr[i].name] = arr[i].value; } console.log(result); console.log(JSON.stringify(result));

Answer 3

我相信這就是您正在尋找的：

 const data = [ { name: 'rajesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'ramesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'abhi', type: 'int', value: '5' } ] const result = data.reduce((acc, curr) => { acc[curr.name] = curr.value return acc }, {}) console.log(result, JSON.stringify(result))

Answer 4

let arr = [ { name: 'rajesh',
    type: 'varchar',
    length: 50,
    value: '07/21/2020' },
  { name: 'ramesh',
    type: 'varchar',
    length: 50,
    value: '07/21/2020' },
  { name: 'abhi', type: 'int', value: '5' }
 ];


 let result = {};

 for(i= 0; i < arr.length; i++){
    result[arr[i].name] = arr[i].value;
 }

 console.log(result);
 console.log(JSON.stringify(result));

Answer 5

 const data = [{ name: 'rajesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'ramesh', type: 'varchar', length: 50, value: '07/21/2020' }, { name: 'abhi', type: 'int', value: '5' } ] const convertedData = Object.fromEntries(data.map(({ name, value }) => [name, value])) console.log(convertedData) console.log(JSON.stringify(convertedData))