Question

Given the following JavaScript:

var someFunction = function(id) {
  //do some stuff
  var modifyId = function(id) {
     //do some stuff
     outer.id = id; //is there any way to modify the id variable in the outer scope from here?
  }
}

How do you modify the id passed into the outer function scope from within the inner function scope?

Answer 1

Unfortunately you can’t. By naming the parameter in the nested function id, you’ve shadowed the parameter in the outer function. Javascript contains no facility for accessing the shadowed name. The only option is to choose a different name for one of the variables.