Finishing AP Computer Science Principles is a major milestone, but the leap from block-based coding to real-world JavaScript can feel daunting. Fortunately, the landscape has evolved: Code.org has ...

Excel doesn’t have a built-in AVERAGEIF() function, but you can still average values, conditionally. Excel has SumIf and CountIf, but no AverageIf. However, with a little array magic, you can get ...

In the past two columns, we’ve looked at higher-order functions and talked a little bit about the power of functional programming. So far, the concepts we’ve covered do little to indicate how powerful ...

Currently, Typescript does not support all uses of Ecmascript's spread operator. Specifically, in function calls, Typescript only supports spreading array arguments that match rest parameters. #4130 ...

Functions are subprograms with repeating JavaScript statements that are grouped into a block and called using the function name and optional arguments. Functions in JavaScript are real objects ...