Rearranging information within a JSON structure

Here is a sample of Javascript object and code to consider:

Javascript Object

{
    "thing":{
       "data":"some data",
       "thumb":"some data",
       "data1":"some data",
       "data2":"some data",
       "data3":"some data",
    },
    "extra1":[
       {
          "extradata1":"some data",
          "extradata2":"some data",
          "extradata3":"some data",
          "extradata4":"some data"
       },
       {
          "extradata1":"some data",
          "extradata2":"some data",
          "extradata3":"some data",
          "extradata4":"some data"
       }
    ],
    "extra2":[
       {
          "hightlighted": false, 
          "extradata2":"some data",
       },
       {
          "hightlighted": false, 
          "extradata2":"some data",
       },
       {
          "hightlighted": true, 
          "extradata2":"some data",
       },
       {
          "hightlighted": false, 
          "extradata2":"some data",
       }
     ]
}

The task is to locate an object in 'extra2' where the value is true, remove it from its current position, and insert it back at the beginning of the 'extra2' object.

The solution attempt involves:

for (var i=0; i<object.extra2.length; i++){
        if (object.extra2[i].highlighted === true) {
            highlightStore = object.extra2[i];
            delete object.extra2[i]
            object.extra2.unshift(highlightStore)
        }
    }

However, troubleshooting is needed as the intended functionality is not yet achieved.

javascriptjson

Answer №1

The problem lies here:

object.extra2.push(highlightStore)

Instead of using the push() method to add elements to the end of an array, you should utilize the unshift() method which adds elements to the beginning like so:

object.extra2.unshift(highlightStore)

The unshift() method places elements at the start of the array.

Answer №2

It is not recommended to alter the original data directly as it can lead to complications. Avoid using mutating methods such as push or shift.

Instead, consider creating new variables to store modified versions of the original data.

For your specific scenario, a possible solution would be:

const extra2sorted = [ ...data.extra2.filter(v => v.hightlighted), ...data.extra2.filter(v => !v.hightlighted) ]

Answer №3

One way to organize the provided information is by arranging the dataset by utilizing the "hightlighted" characteristic. (Take note of the spelling error. It should actually be "highlighted".) To achieve this, you can follow the example below:

const object = {detail: {info: "some details", image: "some image", data1: "some info", data2: "some info", data3: "some info"}, additionalInfo1: [{extraDetail1: "some detail", extraDetail2: "some detail", extraDetail3: "some detail", extraDetail4: "some detail"}, {extraDetail1: "some detail", extraDetail2: "some detail", extraDetail3: "some detail", extraDetail4: "some detail"}], additionalInfo2: [{hightlighted: false, moreDetail2: "some detail"}, {hightlighted: false, moreDetail2: "some detail"}, {hightlighted: true, moreDetail2: "some detail"}, {hightlighted: false, moreDetail2: "some detail"}]}

object.additionalInfo2.sort(({hightlighted: h1}, {hightlighted: h2}) =>
  (h1 && !h2) ? -1 : (h2 && !h1) ? 1 : 0
)

console.log(object)
.as-console-wrapper {min-height: 100% !important; top: 0}

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