When you use ECharts to build dashboards, the core of every chart is the options object. This object is a plain JavaScript structure that tells ECharts exactly how to draw your chart, what data to show, and how users can interact with it. The options object is made up of several key properties:

• The title property lets you set the main heading of your chart, making it clear to users what the visualization represents;
• The tooltip property controls the pop-up information that appears when you hover over different chart elements, offering more details about specific data points;
• The legend property provides a guide to the chart’s series, helping users understand what each color or line means;
• The xAxis and yAxis properties define the axes of your chart, such as the categories or values on the horizontal and vertical sides;
• The most important part is the series property, which actually holds the data and determines how it will be visualized—like lines, bars, or pie slices.

Each of these properties can be customized to fit your chart’s needs, and together they make up the full configuration for any ECharts visualization.