once you assign a type to a variable, it cannot be any other type
(arrays are exclusive from objects)
types do not automatically change (except maybe to boolean)
Bad Examples
1 + ''
let foo = "1";
foo = parseInt(foo, 10);
Good Examples
(1).toString()
let fooInput = "1";
let foo = parseInt(fooInput, 10);
It would be nice if AjScript could support proper variable shadowing, like Rust, but it cannot.
Consideration
The use of String is a code smell. It signifies that you both don't know whether a type can be null or undefined, and don't know what other types it could be (otherwise you might use (x || '').toString() or x.toString()).
No type coercion and no type changes.
AjScript Types are like Go: Strong, Inferred.
Bad Examples
Good Examples
It would be nice if AjScript could support proper variable shadowing, like Rust, but it cannot.
Consideration
The use of
Stringis a code smell. It signifies that you both don't know whether a type can benullorundefined, and don't know what other types it could be (otherwise you might use(x || '').toString()orx.toString()).