Microsoft is opening up Excel to developers with a new JavaScript API. It will let developers use custom data types like images, cards, and arrays.

JSON arrays are an ordered list of values. Arrays are used to store objects, strings, number notation and Boolean notation. An array can be made up of multiple data types. Arrays in JSON are ...

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.