What is the reason for the JSON Structure always displaying a numeric key first?

(The Challenge of Updating JSON Structure based on User Interaction)

Utilizing Angular Typescript, I dynamically create a JSON structure that reflects user interactions within certain components.

Process Overview

  1. The initial default setting for the JSON is as follows:

    {
  "keyword": {
  "value": "product",
   "type": "main"
   }
}

  2. For instance, when a user selects a parameter such as Name, and follows specific actions in the UI, the resulting JSON is updated to:

    {
  "keyword": {
  "value": "product",
  "type": "main"
  },
   "Name": {
   "value": " <hasProperty> Name",
   "type": "dataprop"
  }
}

  3. If the user then inputs a numeric value for another parameter like dryTime, the JSON will reflect this change:

    {
   "20": { 
   "value": "<hasValue> 20",
   "type": "fValue"
   },
   "keyword": {
    "value": "Varnish",
    "type": "main"
   },
   "Name": {
   "value": " <hasProperty> Name",
   "type": "dataprop"
   },
  "dryingTime": {
  "value": " <hasProperty> dryingTime",
  "type": "dataprop"
   }
}

Although JSON is inherently unordered, maintaining sequence proves crucial. In a similar past scenario, displaying a value like 20 as 20.0 after dryingTime worked well, emphasizing the importance of order for data interpretation via looped key parsing.

The accuracy of key sequencing directly impacts array generation from JSON keys, contextualizing user interactions properly. Exploring alternatives to JSON storage while preserving interaction details requires careful consideration.

jsonangulartypescript

Answer №1

It's true that JSON fields do not have a specific order, but JSON arrays do maintain order.

To preserve the sequence of elements you insert, one approach is to structure your JSON as follows:

{
    "category": {
        "type": "fruit",
        "name": "apple"
    },
    "details": [
        {
            "info": "color",
            "value": "red"
        },
        {
            "info": "size",
            "value": "medium"
        }
    ]
}

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