Function GetValue

src/utils/object/GetValue.js:43–110

(source, key, defaultValue, altSource)

 * @return {*} The value of the requested key.
 */
var GetValue = function (source, key, defaultValue, altSource)
{
    if ((!source && !altSource) || typeof source === 'number')
    {
        return defaultValue;
    }
    else if (source && source.hasOwnProperty(key))
    {
        return source[key];
    }
    else if (altSource && altSource.hasOwnProperty(key))
    {
        return altSource[key];
    }
    else if (key.indexOf('.') !== -1)
    {
        var keys = key.split('.');
        var parentA = source;
        var parentB = altSource;
        var valueA = defaultValue;
        var valueB = defaultValue;
        var valueAFound = true;
        var valueBFound = true;

        //  Use for loop here so we can break early
        for (var i = 0; i < keys.length; i++)
        {
            if (parentA && parentA.hasOwnProperty(keys[i]))
            {
                //  Yes parentA has a key property, let's carry on down
                valueA = parentA[keys[i]];
                parentA = parentA[keys[i]];
            }
            else
            {
                valueAFound = false;
            }

            if (parentB && parentB.hasOwnProperty(keys[i]))
            {
                //  Yes parentB has a key property, let's carry on down
                valueB = parentB[keys[i]];
                parentB = parentB[keys[i]];
            }
            else
            {
                valueBFound = false;
            }
        }

        if (valueAFound)
        {
            return valueA;
        }
        else if (valueBFound)
        {
            return valueB;
        }