Sets or retrieves the image in the grid footer row (footer icon). The image name should be defined in the stylesheet and linked to the actual image file with the css rules.
See how to include additional images in your stylesheet.
var value = obj.getFooterImage();
obj.setFooterImage(value);
obj.onFooterImageChanging = function(value){...};
obj.onFooterImageChanged = function(value){...};
obj.onFooterImageError = function(value){...};
Single image
obj.setFooterVisible(true);
obj.setFooterText("footer text", 0);
obj.setFooterImage("favorites", 0); // footer image, column-0
obj.setFooterTooltip("tooltip text", 0);
Array of images
obj.setFooterVisible(true);
obj.setFooterText(textArray);
obj.setFooterImage(imageArray); // footer image array
obj.setFooterTooltip(tooltipArray);
Overview: using images
Grid templates: footer
Footer model: text, tooltip, link, value, data, format
Image properties: cell, selector, header, top, bottom