The purpose of this exercise is to investigate the object arrays using the technologies of JavaScript. An example of the object array is the metals, which has properties of name, symbol and atomic ...

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.

The object can then be reconstituted by calling normalizeProperties(map) resulting in an object equivalent to the original person object. We can also get and set individual properties by name. The ...