Discover the underlying data within a nested JSON structure and track back to identify the corresponding values

In the JSON structure provided below,

Suppose I have the chapter "number" and section "number".

What is the most efficient way to search and trace backwards starting from what I already know, in order to find the "number" of the title within titles and then the "number" of the division?

Given the abundance of divisions, titles, chapters, and sections, it may seem challenging.

[
  {
    "name":"Division",
    "number":1,
    "TITLES":[
      {
        "CHAPTERS":[
          {
            "name":"chapter2",
            "number":2,
            "SECTIONS":[
              {
                "name":"section3",
                "number":3
              }
            ]
          }
        ],
        "name":"title1",
        "number":1
      }
    ]
  }
]
javascriptarraysjson

Answer №1

This snippet of code is designed to extract matching Title and Division numbers from a given array of Data.

var result = [];
var targetChapterNumber = 2;
var targetSectionNumber = 3;

dataArray.forEach(function (division, divisionIndex) {
  division.TITLES.forEach(function (title, titleIndex) {
    title.CHAPTERS.forEach(function (chapter, chapterIndex) {
      chapter.SECTIONS.forEach(function (section, sectionIndex) {
        if(section.number === targetSectionNumber && chapter.number === targetChapterNumber){
          result.push({title: title.number, division: division.number});
        }
      })
    })
  });
})
console.log(result);

Upon execution, this code will generate an Array containing the desired Title and Division numbers that match the specified criteria.

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