The bar chart allows a number of properties to be specified for … Canvas Pie charts also have a clone of these defaults available to change at Chart.defaults.pie, with the only difference being cutoutPercentage being set to 0. z: number: 0: z-index of gridline layer. Height is calculated as bar height * number of data values. The overflowing content can be manipulated with the overflow property. Every Chart.js chart needs to have a