Javascript object created from objectss always references last element

It's because actionToCall is being assigned to currentAction.

Since currentAction is global it's value keeps changing as the loop iterates.

When the loop ends, currentAction is assigned to evenMore.

Here's the fix using a self execution function to induce scope.

var typeArray = {
    type1: {
        function1: function() {
            console.log("this is function 1");
        },
        function2: function() {
            console.log("this is function 2");
        }
    },
    type2: {
        somefunction: function() {
            console.log("this is some function")
        }
    },
    type3: {
        blah: function() {
            return;
        },
        moreBlah: function(something) {
            console.log(something);
        },
        evenMore: function() {
            console.log("I'm last!");
        }
    }
},
index,
typeIndex,
currentType,
actionIndex,
currentAction,
newFunctions = {};

for(typeIndex in typeArray) {
    currentType = typeArray[typeIndex];
    for(actionIndex in currentType) {
        currentAction = currentType[actionIndex];

        console.log(currentAction.toString());

        //induce scope here so actionToCall keeps the current value of currentAction.
        (function(){

            var actionToCall = currentAction;
            newFunctions[actionIndex] = function() {


                console.log("about to run action");

                actionToCall.call(this);

                console.log("action has been called");
            }
        })();
    }
}

console.log(newFunctions);

for(index in newFunctions) {
    (newFunctions[index])();
}