How do I extract an object from a json file based on a nested value (using JavaScript)

Question

    const data = [
   {0: {id: "1",cat:{string:[{color:"yellow",weight:"10"},{color:"orange",Weight:"10"}]}},
   {1: {id: "1",cat:{string:[{color:"blue",weight:"10"},{color:"orange",Weight:"10"}]}},
   {2: {id: "1",cat:{string:[{color:"white",weight:"10"},{color:"orange",Weight:"10"}]}},
   {3: {id: "1",cat:{string:[{color:"blue",weight:"10"},{color:"orange",Weight:"10"}]}},
]

Filter by Color: "Yellow"

Desired Output: [{0: {id: 1, country: "SA", address: "IOXX",cat:[{color: "yellow",weight: "10"}]}}]

Does this answer your question? Filtering nested JSON javascript — TBA
– TBA, Commented Nov 9, 2021 at 5:34
Is it possible that cat Array has multiple objects? If yes, what would you expect? Should all of the objects have the color of Yellow to return that record? Or if just one of them pass the condition you'll accept that? — fsefidabi
– fsefidabi, Commented Nov 9, 2021 at 5:35

54ka · Accepted Answer · 2021-11-09 07:10:49Z

0

You can use filter() method

const data = [
    { 0: { id: "1", cat: { string: [{ color: "yellow", weight: "10" }, { color: "orange", Weight: "10" }] } } },
    { 1: { id: "1", cat: { string: [{ color: "blue", weight: "10" }, { color: "orange", Weight: "10" }] } } },
    { 2: { id: "1", cat: { string: [{ color: "white", weight: "10" }, { color: "orange", Weight: "10" }] } } },
    { 3: { id: "1", cat: { string: [{ color: "blue", weight: "10" }, { color: "orange", Weight: "10" }] } } }
];

var res = data.filter((el, i) => data[i][i]['cat']['string'][0]['color'] === 'yellow');

console.log(res);

edited Nov 9, 2021 at 7:10

answered Nov 9, 2021 at 6:04

54ka

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2 Comments

Powershell-Guy Over a year ago

Updated actual structure its has one additional layer of complexity.

54ka Over a year ago

@Powershell-Guy, I made update of my post

fsefidabi · Accepted Answer · 2021-11-09 05:49:38Z

0

You can map over your data array and check if each object passes your conditions or not.

const data = [
 {0: {id: 1, country: "SA", address: "IOXX",cat:[{color: "yellow",weight: "10"}]}},
 {1: {id:2, country: "SAP", name: "N", address: "IOP",cat:[{color: "blue",weight: "10"}]}},
 {2: {id:3, country: "S", name: "NO", address: "I",cat:[{color: "blue",weight: "10"}]}},
 {3: {id:4, country: "SXX", name: "NOI", address: "INDIA",cat:[{color: "blue",weight: "12"}]}},
]

const filterByColor = function (color) {
  const filteredCats = []
  data.forEach((item, index) => {
    const hasCorrectColor = item[index].cat.every((cat) => cat.color === color)
    if (hasCorrectColor) {
       filteredCats.push(item)
    }
      
  })
  return filteredCats
}

filterByColor('yellow')

answered Nov 9, 2021 at 5:49

fsefidabi

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1 Comment

Powershell-Guy Over a year ago

updated to actual structure its got one more layer .

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