Using forEach

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How can update values in an array of objects?

how to get new array newSelect using map ,forEach

const selects = [false, true, true, true, false];
    const oldSelects = [
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
    ];
    const newSelect = [
      { select: false, name: 'AA' },
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
      { select: true, name: 'AA' },
      { select: false, name: 'AA' },
    ];

oldSelects[0].select === selects[0]

about 4 years ago · Juan Pablo Isaza

3 answers

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Answer 1 · 2022-06-30T08:25:35.820Z

Hey you can map the old array to a new one.

const selects = [false, true, true, true, false];
const oldSelects = [{
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
];

const newSelect = oldSelects.map((object, index) => {
  object['select'] = selects[index]
  return object;
})

console.log(newSelect)

Answer 2 · 2022-06-30T08:25:35.829Z

@Inder answer is great, but a map looks more clean imo:

const selects = [false, true, true, true, false];
const oldSelects = [{
    select: true,
    name: "AA"
  },
  {
    select: true,
    name: "AA"
  },
  {
    select: true,
    name: "AA"
  },
  {
    select: true,
    name: "AA"
  },
  {
    select: true,
    name: "AA"
  }
];
const newSelect = oldSelects.map((el, i) => ({
  select: selects[i],
  name: el.name
}));

console.log(newSelect);

Answer 3 · 2022-06-30T08:25:35.841Z

Using forEach

const selects = [false, true, true, true, false];
const oldSelects = [{
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
];

const newSelects = []

oldSelects.forEach((selectItem, index) => newSelects.push({...selectItem, select: selects[index]}))
console.log(newSelects)

Using map

const selects = [false, true, true, true, false];
const oldSelects = [{
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
  {
    select: true,
    name: 'AA'
  },
];
const newSelects = oldSelects.map((selectItem, index) => ({...selectItem, select: selects[index]}))

console.log(newSelects)

0

169

How can update values in an array of objects?

3 answers

0

0

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Using forEach

Using map

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Andres GPT