Whereas Java and several other programming languages have a wide and rich range of datatypes and collections types, JavaScript only has a small number of primitive datatypes (Boolean, Number, String, ...

Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js. There are ...

Topics covered include: Object creation Bracket vs Dot Notation Property descriptors How object references work Prototype chain Modern syntax like spread and destructuring Loop over objects Custom ...