Are variables statically or dynamically “scoped” in javascript?

Question

Or more specific to what I need:

If I call a function from within another function, is it going to pull the variable from within the calling function, or from the le

Answer 1

As far as I understand, any variable without the var keyword is treated global, with it, its local scoped, so:

// This is a local scoped variable.
var local_var = "something"; 

// This is a global scoped variable.
global_var = "something_else";

As a good JS practice, it is recommended to ALWAYS add the var keyword.