Simple Titanium form saved in an array with return key eventlistener moving to the next field

titanium-array-form-next-key.js

Ti.UI.setBackgroundColor('#000');
 
var win = Titanium.UI.createWindow({
    title : 'test'
});
 
var arrayLength = 5
var fields = new Array(arrayLength);
 
for( i = 0; i < arrayLength; i++) {
    fields[i] = Ti.UI.createTextField({
        id : i,
        height : 40,
        width : 100,
        hintText : 'Field ' + i,
        value : '',
        top : i * 50,
        returnKeyType : i != arrayLength - 1 ? Titanium.UI.RETURNKEY_NEXT : Ti.UI.RETURNKEY_DONE,
        borderStyle : Titanium.UI.INPUT_BORDERSTYLE_ROUNDED
    });
 
    fields[i].addEventListener('return', function(e) {
        var j = e.source.id;
 
        if(j != arrayLength-1) {
            fields[j + 1].focus();
        } else {
            alert('Done');
        }
 
    });
    win.add(fields[i]);
};
 
win.open();