Numbers can be written with or without decimals: Extra large or extra small numbers can be written with scientific "," (exponential) notation:"," Booleans can have ...

A new JavaScript API will be available to preview inside Excel later this month, which will let developers create these custom data types for inputs and outputs and enable custom functions.

If not we can use let. We should only use var if the programme has to support older verson of JavaScript code. The data or values stored in the variables are data and the types of data stored in them ...