Learn how to set a picture as the background fill in a chart using Aspose.Cells for JavaScript via C++. Our guide will show you how to import and position the picture, adjust its size and color, and apply formatting options to enhance your chart's appearance....for chart fill: </ p > < input type = "file" id = "fileInput" accept...".xls,.xlsx,.csv" /> < input type = "file" id = "imageInput" accept...