Module Helper functions

I am creating a simple UI commonJS based module which contain various custom UI Modules.

function createCustomView(i)
{
 
    ...
 
 
    function helper ()
    {
        //helper function
    };
 
}
 
exports.createCustomView = createCustomView;

in my window code i will have

custView = ...createCustomView("test");

I have a helper function inside the createCustomView function which allows me to perform certain logic and make changes to internal variables.

I want to be able to call this helper function externally - what would be the way to do this?

i tried custView.helperFunc(); but that does't work.

function createCustomView(i){
 
    this.i = i; // save the arg
    this.view = Ti.UI.createView({
        width : "95%"
    });
 
    this.text1 = Titanium.UI.createTextField({
        keyboardType: Ti.UI.KEYBOARD_NUMBER_PAD
    });
 
    this.view.add(this.text1);
 
    return this;
}
 
createCustomView.prototype.helper ()
{
    var that = this;
    that.tex1.blur();
};
 
exports.createCustomView = createCustomView;

Hi

Tweak your code layout slightly;

function helper()
{
    //helper function
}
 
function createCustomView(i)
{
...
    helper(); // you call call the local function here
...
}
 
exports.createCustomView = createCustomView;
exports.helper = helper; // and expose it externally as well

Try this

Lets consider this as createCustomView.js

function createCustomView(i)
{
 
    //This variable is accessible only with createCustomView and not externally using the instance
    var _privateVariable = 'private value';
 
    //This variable is accessible within createCustomView and also outside using the object of 
      createCustomView. See below for example...
    this.localvariable = '';
 
    //This is a private function available only to createCustomView and not accessible with the object of 
      createCustomView
    var _privateFunction = function(){
        //My Private Implementation goes here.
    }
    this.helper = function()
    {
        var myLocalvariable = this.localvariable;
        Ti.API.info(myLocalvariable);
        Ti.API.info(_privateVariable);
        };
 
}
 
module.exports = createCustomView;

You can access it from an other class as below: Lets consider another file MyView.js

function MyView(){
    var createCustomView = require(path to file + 'createCustomView');
    var customView = new createCustomView();
 
    customView.localvariable = 'some value';
    customView.helper();
    //This will output to the console.
    //'some value'
    //'private value'
 
}
module.exports = MyView;

Hope this helps

Thanks and Regards

Abishek R Srikaanth