Array of all ranges defined for the grid. This property only works if you grid is excel-like grid, .selectType is set to 'cell'. There are a set of methods to work with ranges. To add and remove ranges you should use .addRange and .removeRange methods. If can find a range by name using .getRange method. If you need to refresh ranges, use .refreshRanges. The range object has following structure: range = { name : '', // name of the range range : [], // two dimensional array that defines range style : '' // style property for the range } If you need to see what ranges are defined, you may iterate through .ranges property for (var r in w2ui.grid.ranges) { console.log('Range '+ r, w2ui.grid.ranges[r]); }