Question

im trying to build a javascript matrix as an object.

i tied :

var variations={}; 
variations["p1088"]["red"]["gen"]=1107;
variations["p1090"]["red"]["l"]=1288;

and

var variations={}; 
variations.p1088.red.gen=1107;
variations.p1090.red.gen=1288;

but both throws an exception

TypeError: variations.p1090 is undefined

whats wrong here ?

Answer 1

because you cannot assume that p1088, red, and gen are objects. This works:

// short version
var variations = { p1088: { red: { gen: 1107 } } };

// long version
var varations = {};
varations.p1088 = {};
varations.p1088.red = {};
varations.p1088.red.gen = 1077;