Question

For example:

var closure = (function(){
 var closureVariable = "Localized";

 function ReadLocal(){
  //how can I access closureVariable here?
 }
})();

Answer 1

Just use closureVariable.

For example:

var closure = (function(){
 var closureVariable = "Localized";

 function ReadLocal(){
  console.log(closureVariable);
 }
})();

ReadLocal is an inner scope, and local variables are always visible in inner scopes.