Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Data Days is here! Join us now for 60+ days of learning, challenges, and connection. Learn more

Reply
walid140891
Helper III
Helper III

Develop custom Calendar View visual using Typescript and D3js

Hi all,

 

I'm developing my first power bi custom visual using typescript, d3js and node Calendarjs library based on the example that microsoft provides that you can download using powershell.

 

The issue I'm facing is that with the following bunch of code I'm always getting a blank chart in the power bi online platform:

 

 

 

"use strict";

var Calendar = require('calendarjs');

import "core-js/stable";
import "./../style/visual.less";
import powerbi from "powerbi-visuals-api";
import VisualConstructorOptions = powerbi.extensibility.visual.VisualConstructorOptions;
import VisualUpdateOptions = powerbi.extensibility.visual.VisualUpdateOptions;
import IVisual = powerbi.extensibility.visual.IVisual;
import EnumerateVisualObjectInstancesOptions = powerbi.EnumerateVisualObjectInstancesOptions;
import VisualObjectInstance = powerbi.VisualObjectInstance;
import DataView = powerbi.DataView;
import VisualObjectInstanceEnumerationObject = powerbi.VisualObjectInstanceEnumerationObject;
import IVisualHost = powerbi.extensibility.IVisualHost;
import * as d3 from "d3";
type Selection<T extends d3.BaseType> = d3.Selection<T, any, any, any>;

import { VisualSettings } from "./settings";
export class Visual implements IVisual {
    private target: HTMLElement;
    private updateCount: number;
    private settings: VisualSettings;
    private textNode: Text;



    constructor(options: VisualConstructorOptions) {
        console.log('Visual constructor', options);
        this.target = options.element;
        this.updateCount = 0;
        if (document) {
            
            var table = d3.select('body').append('table')
                .attr("style", "margin-left: 250px;"),
                thead = table.append("thead"),
                tbody = table.append("tbody");

            var cal = new Calendar(2021, 0);
            var weeks = cal.monthDays();
            //var weeks = cal.weeks;
            weeks.forEach(function (week) {
                this.table
                    .append('tr')
                    .selectAll('td')
                    .data(week)
                    .enter()
                    .append('td')
                    .text(function (d) {
                        return d > 0 ? d : "";
                    })
            });
        }


        
    }

    public update(options: VisualUpdateOptions) {
        
    }
}

 

1 REPLY 1
V-lianl-msft
Community Support
Community Support

Hi @walid140891 ,

 

I guess you didn't define the style of this visual after getting data in the update() function, resulting in the display of this visual as blank.

https://docs.microsoft.com/zh-cn/power-bi/developer/visuals/develop-circle-card#optional-review-the-... 

 

Best Regards,
Liang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

 

Helpful resources

Announcements
Fabric Data Days is here Carousel

Fabric Data Days 2026

Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.

May Power BI Update Carousel

Power BI Monthly Update - May 2026

Check out the May 2026 Power BI update to learn about new features.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

Top Kudoed Authors