sortArrayByKey.js

100%

sortArrayByKey.js

✓ Published0🌍 Public

Last edited Jun 14, 2018

Created on May 29, 2016

This example demonstrates a reusable utility for sorting arrays of objects by nested properties, such as `letter` or `values.value2`. The function `sortArrayByKey` first maps each element to extract the target value via dot-notation path traversal, then sorts the mapped indices using a comparator that handles string and numeric comparisons, and finally returns the reordered original objects. It uses plain JavaScript array methods (`map`, `sort`) without external libraries, and the included example generates random test data with `Math.random` to show sorting across different key depths.

AI-generated description

Similar vizzes

Loading thumbnail…

JavaScript Arrays

This example demonstrates how JavaScript’s built-in array methods can transform and organize data, specifically by sorting an array of objects by their `key` property. It shows the result of calling `entries.sort((a,b) => a.key < b.key ? -1:1)`, which arranges the entries alphabetically by key. The code also includes commented-out examples of `filter`, `map`, `reduce`, and numeric sorting with comparator functions, illustrating pitfalls like lexicographic sorting of numbers. The implementation relies solely on native JavaScript array APIs, with no external libraries or rendering, outputting results to the console.

Kkwambokar

75% match

Loading thumbnail…

JavaScript Arrays

This example demonstrates how to sort an array of objects by a key using D3’s `ascending` comparator within a JavaScript `sort()` method. The code defines three entries with keys and values, then logs the sorted array to the console. It relies on the D3 library version 7.8.5, importing the `ascending` function from the `d3` module. The example highlights a concise alternative to manual comparator logic, with commented-out code showing a `reduce` operation for future object transformation.

Aa0x0

74% match

Loading thumbnail…

JavaScript Arrays

This example demonstrates fundamental JavaScript array operations, including mapping, reducing, and sorting, using a custom `range` function and a collection of key-value objects. The code logs a sorted version of the entries array to the console, ordering objects by their `key` property in ascending alphabetical order. It also includes commented-out examples of `map`, `reduce`, and object construction, showcasing how to transform data and aggregate values. The example relies on native JavaScript array methods and imports `ascending` from the D3 library (v7.8.5), though the primary operations use built-in functionality rather than D3-specific utilities.

Nnim@brejnholt.dk

72% match

Loading thumbnail…

Javascript Arrays

This example demonstrates JavaScript array sorting using D3's `descending` comparator on an array of key-value objects. The code defines three entries with keys A, B, and C, then sorts them in descending order by key using the `sort` method with a comparator imported from D3. The result is logged to the console, showing the reordered array. A commented-out section hints at an alternative `reduce` operation that would convert the array into an object mapping keys to values. The example uses D3 version 7.7.0 for its comparator utilities.

JJMeltzer92

71% match

Loading thumbnail…

Javascript_Arrays

This example demonstrates sorting arrays with D3, showing both numeric and object-based data. It uses `d3.ascending` and `d3.descending` to sort numbers in ascending or descending order, and also sorts arrays of objects by their key or value properties using custom comparator functions. The code, written in JavaScript with the d3 library (v7.8.2), logs the sorted results to the console, comparing D3’s sort methods against manual comparison logic.

JJaga-droid

71% match

Loading thumbnail…

JavaScript Arrays

This example demonstrates common JavaScript array operations, including sorting with custom comparators, mapping to objects, reducing to a total, and converting arrays to nested objects. It compares default lexicographic sorting with numeric ascending and descending sorts using both plain JavaScript and D3’s `ascending` function. The code logs sorted arrays, transformed objects, and reduced results to the console, showing how D3’s `ascending` handles key-based sorting for objects. The visualization is purely computational, with no DOM or graphical output, relying on D3 v7.8.2 for its comparator utilities.

Sserebryanaya.n@gmail.com

71% match

Loading thumbnail…

JavaScript Arrays

This example demonstrates common JavaScript array operations using plain code and D3’s `ascending` comparator. It shows how functions like `range`, `forEach`, `filter`, `map`, `reduce`, and `sort` transform arrays, including sorting numeric values correctly and grouping entries by key. No visual output is rendered; the code logs intermediate results to the console. The example uses the `d3` library’s `ascending` function for stable sorts, building a practical reference for array manipulation basics.

Kkathrynrbernard

70% match

Loading thumbnail…

JavaScript Arrays

This example demonstrates JavaScript array manipulation techniques, including `forEach`, `filter`, `sort`, `map`, and `reduce`, using a generated range of numbers and an array of key-value objects. The code highlights sorting differences between default lexicographic ordering and numeric sorting with a comparator, as well as using the `ascending` helper from d3. It also shows how `reduce` can transform an array into an object or sum values. The visualization is a code-based teaching tool with no visual output, focusing on logged results in the console.

Ppawelsapiecha

70% match