を — Marking the Object

Why teach particles through code

A learner meeting Japanese particles usually gets sentences about people and places. Here you get commands you also run, which buys two things. First, the meaning is unambiguous — "add .active to #button" has exactly one reading, so a wrong particle is not a matter of nuance; the sentence describes a different operation. Second, the English is right there: the same command renders in both languages, so a particle’s job can be pointed at directly instead of described abstractly.

The core insight this unit is built to deliver: English marks roles with word order and prepositions; Japanese marks them with particles. Once you internalise that the particle travels with its noun regardless of position, most placement confusion dissolves.