Get it Right in Black & White-JavaScript Arrays

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

JavaScript Arrays

This example demonstrates fundamental JavaScript array operations, including range generation, sorting, filtering, mapping, and reducing, using a variety of data structures. The code creates a numeric range with a custom `range` function, sorts an array of numbers with a comparator, and applies transformations like doubling values and summing elements. It also defines an array of key-value objects. All operations are logged to the console, with results visible in the browser’s developer tools. The example imports the `ascending` helper from D3, though it is not actively used, and runs within a minimal HTML page with no visual output.

Aalexscott-untitled

javascript arrays

This example demonstrates how to manipulate JavaScript arrays, focusing on generating a range of numbers, filtering, mapping, and reducing, with sorting handled by comparing object keys. The visualization shows the process of creating an array using a custom `range` function and then sorting an array of entries alphabetically by their `key` property using a comparison function. The code uses built-in JavaScript array methods like `push`, `sort`, and `map`, and references the D3 library's `ascending` function for sorting. The output is logged to the console, showing the sorted entries.

GGullyPlook

JavaScript arrays

This example demonstrates common JavaScript array manipulation techniques, including `map`, `filter`, `reduce`, and custom sorting, using both native methods and D3’s `ascending` and `descending` helpers from d3-array. The code creates a range of numbers, filters for even values, transforms objects, and sorts an array of numeric and key–value entries. It shows how `reduce` can aggregate values or build an object from array entries. The visualization is a bare HTML page with no rendered graphics, focusing instead on console output for learning array operations.

AAngela Kochoska

javascript arrays

This example demonstrates core JavaScript array manipulation techniques using D3 v6’s ascending helper for sorting. The code defines a custom range function to generate numeric arrays, then explores iteration with forEach and for loops, filtering, sorting with custom comparators, mapping to transformed values, and reducing to cumulative sums. It also sorts an array of objects by a key property using d3.ascending, and includes commented examples of reduce-based object conversion. No visualization is rendered; the example focuses purely on console-based array operations.

Kktshim@snu.ac.kr

JavaScript Arrays

This example demonstrates the fundamental array methods in JavaScript, including `range`, `filter`, `map`, `sort`, `forEach`, and `reduce`. The code uses D3 v6’s `ascending` and `decending` imports to properly sort arrays, while also showcasing custom comparator functions. It works with a simple generated range of numbers and a small dataset of key-value entries, logging results to the console. The page renders only the static title “JavaScript Arrays” with no visual output, focusing entirely on algorithmic array manipulation.

AAndre J Denais

JavaScript Arrays

This example demonstrates core JavaScript array operations using D3’s ascending helper and native methods like sort, map, reduce, and range construction. It shows how to generate a numeric sequence, sort an array with a custom comparator, transform values into objects, and accumulate sums or key-value pairs. The code logs intermediate results, including sorting an array of objects by key and reducing entries into a plain object. Rendering is limited to console output with no visual DOM elements. It relies on d3.ascending for alphabetical ordering within the sort operations.

AAnshul Rawat

JavaScript Arrays

This example demonstrates fundamental JavaScript array operations for data manipulation, including range generation, filtering, mapping, reducing, and sorting. The code creates an array of numbers 0 through 9 using a custom range function, then explores various array methods with commented-out examples. It also shows sorting an array of objects by a key property using D3's `ascending` comparator, and includes commented examples of reduce to transform entries into an object. The example highlights how D3 version 6.6.2 provides utility functions that integrate with native JavaScript array methods.

CCurran Kelleher