function _addImage(img) {
            if (_images.indexOf(img) === -1) {
                img.addEventListener('load', _imageLoaded);
                _images.push(img);
            }
        }
/**
         * Add 'load' event listener and store reference to image
         * @param {elm} img Image being loaded
         */
Add 'load' event listener and store reference to image
@param {elm} img Image being loaded
Add ' load ' event listener and store reference to image @param { elm } img Image being loaded
function _addImage(img) {
            if (_images.indexOf(img) === -1) {
                img.addEventListener('load', _imageLoaded);
                _images.push(img);
            }
        }
function _addImage ( img ) { if ( _images . indexOf ( img ) === - 1 ) { img . addEventListener ( 'load' , _imageLoaded ) ; _images . push ( img ) ; } }
Add 'load' event listener and store reference to image
 @param {elm} img Image being loaded
Add ' load ' event listener and store reference to image @param { elm } img Image being loaded