javascript - iterations for in loop

forin

var box = {}

box['material'] = "cardboard"
box[0] = 'meow'
box['^&*'] = 'testing 123'

// since var is variable the interpreter hold different properties in bracket notation because key holds the value
for(var key in box) {
	console.log(box[key])
}
// side note box.properties are only strings no special characters