JavaScript coercion experiment

Briefing

Is JavaScript coercion arbitrary, or is there a single spec algorithm that explains every famous example?

`[] + []` is an empty string. `[] + {}` is an object tag. `{} + []` is zero, but only in a console. All of it follows one algorithm.

Laboratory

JavaScript Lab

Level

DEVELOPER

Estimated time

7 minutes

Method

interactive

Variables under observation

ToPrimitivevalueOftoStringabstract equalitytype coercion