Page({
    onLoad() {
        const canvasContext = xhs.createCanvasContext('myCanvas');
        // 保存默认填图样式
        canvasContext.setFillStyle('red');
        canvasContext.save();
        canvasContext.setFillStyle('blue');
        canvasContext.fillRect(10, 10, 150, 100);

        // 恢复之前保存的状态
        canvasContext.restore();
        canvasContext.fillRect(50, 50, 150, 100);

        canvasContext.draw();
    }
});