To render your first chart using Chart.js, you need to start by preparing your HTML page. The most important step is to add a <canvas> element where your chart will be drawn. This element acts as the drawing surface for Chart.js. Place it in the body of your HTML with an identifier so you can reference it in your JavaScript code. After setting up the canvas, you initialize a Chart.js instance by providing the canvas context and a configuration object that describes the type of chart and its data.

First, include the Chart.js library in your HTML file. You can use a CDN link for convenience. Next, define your <canvas> element with an id attribute. Then, in your JavaScript, select the canvas using getElementById and pass its context to the Chart.js constructor. The configuration object specifies the chart type, the data to display, and any options for customizing the chart.

Here is a step-by-step example that demonstrates how to render a basic bar chart: