tutorial question: when to create variable

[casey]

Just going through the P3 tutorial "Making your first Phaser 3 game". I realized that "bombs" is not declared first as a variable, unlike "platforms", "player", etc.  It functions with or without the declaration, so when is it necessary to declare the variable ahead of its first use? 

 

[rich]

If you forget to declare it, it just becomes a globally scoped var. which is why it works either way (in this tutorial)