A JavaScript and TypeScript Library for Building Interactive Charts

GoJS, a JavaScript Library for HTML Diagrams

GoJS is a JavaScript and TypeScript library for creating and manipulating diagrams, charts, and graphs.

See GoJS Samples

Get Started with GoJS

GoJS is a flexible library that can be used to create a number of different kinds of interactive diagrams, including data visualizations, drawing tools, and graph editors. There are samples for flowchart, org chart, business process BPMN, swimlanes, timelines, state charts, kanban, network, mindmap, sankey, family trees and genogram charts, fishbone diagrams, floor plans, UML, decision trees, pert charts, Gantt, and hundreds more. GoJS includes a number of built in layouts including tree layout, force directed, radial, and layered digraph layout, and a number of custom layout examples.

GoJS is rendered with an HTML Canvas element (with export to SVG or image formats). GoJS can run in a web browser, or server side in Node or Puppeteer. GoJS Diagrams are backed by Models, with saving and loading typically via JSON.

Read more about GoJS at gojs.net

This repository contains both the library and the sources for all samples, extensions, and documentation. You can use the GitHub repository to quickly search through all of the sources.

Minimal Sample

Graphs are constructed by creating one or more templates, with desired properties data-bound, and adding model data.

<script src="go.js"></script>

<script id="code">
  function init() {
    var $ = go.GraphObject.make;  // for conciseness in defining templates

    var myDiagram =
      $(go.Diagram, "myDiagramDiv",  // create a Diagram for the DIV HTML element
        { // enable undo & redo
          "undoManager.isEnabled": true

    // define a simple Node template
    myDiagram.nodeTemplate =
      $(go.Node, "Auto",  // the Shape will go around the TextBlock
        $(go.Shape, "RoundedRectangle",
          { strokeWidth: 0, fill: "white" },  // default fill is white
          // Shape.fill is bound to Node.data.color
          new go.Binding("fill", "color")),
          { margin: 8 },  // some room around the text
          // TextBlock.text is bound to Node.data.key
          new go.Binding("text", "key"))

    // but use the default Link template, by not setting Diagram.linkTemplate

    // create the model data that will be represented by Nodes and Links
    myDiagram.model = new go.GraphLinksModel(
      { key: "Alpha", color: "lightblue" },
      { key: "Beta", color: "orange" },
      { key: "Gamma", color: "lightgreen" },
      { key: "Delta", color: "pink" }
      { from: "Alpha", to: "Beta" },
      { from: "Alpha", to: "Gamma" },
      { from: "Beta", to: "Beta" },
      { from: "Gamma", to: "Delta" },
      { from: "Delta", to: "Alpha" }

The above diagram and model code creates the following graph. The user can now click on nodes or links to select them, copy-and-paste them, drag them, delete them, scroll, pan, and zoom, with a mouse or with fingers.

Click the image to see the interactive GoJS Diagram


Northwoods Software offers a month of free developer-to-developer support for GoJS to help you get started on your project.

Read and search the official GoJS forum for any topics related to your questions.

Posting in the forum is the fastest and most effective way of obtaining support for any GoJS related inquiries. Please register for support at Northwoods Software's registration form before posting in the forum.

For any nontechnical questions about GoJS, such as about sales or licensing, please visit Northwoods Software's contact form.

Download Details:
Author: NorthwoodsSoftware
The Demo/Documentation: View The Demo/Documentation
Download Link: Download The Source Code
Official Website: https://github.com/NorthwoodsSoftware/GoJS 
License:  The GoJS software license.

#gojs #javascript #webdev #tupescript #html

What is GEEK

Buddha Community

A JavaScript and TypeScript Library for Building Interactive Charts
Mya  Lynch

Mya Lynch


Top 5 JavaScript Libraries to Create an Organizational Chart

In this article, we’ll review five JavaScript libraries that allow you to create online organizational charts. To make this info useful for different categories of readers, we’ve gathered together libraries with different functionality and pricing policy. To help you decide whether one of them is worthy of your attention or not, we’ll take a look at the main features and check if the documentation is user-friendly.

DHTMLX Diagram Library

The DHTMLX diagram library allows creating easily configurable graphs for visualization of hierarchical data. Besides org charts, you can create almost any type of hierarchical diagrams. You can choose from organizational charts, flowcharts, block and network diagrams, decision trees, mind maps, UML Class diagrams, mixed diagrams, and any other types of diagrams. This variety of diagrams can be generated using a built-in set of shapes or with the help of custom shapes.

You can set up any diagram shape you need with text, icons, images, and any other custom content via templates in a few lines of code. All these parameters can be later changed from the UI via the sidebar options in the editor.

Top 9 JavaScript Charting Libraries

The edit mode gives an opportunity to make changes on-the-fly without messing with the source code. An interactive interface of the editor supports drag-and-drop and permits you to change each item of your diagram. You can drag diagram items with your mouse and set the size and position property of an item via the editor. The multiselection feature can help to speed up your work in the editor, as it enables you to manipulate several shapes.

The library has an exporting feature. You can export your diagram to a PDF, PNG, or JSON format. Zooming and scrolling options will be useful in case you work with diagrams containing a big number of items. There is also a search feature that helps you to quickly find the necessary shape and make your work with complex diagrams even more convenient by expanding and collapsing shapes when necessary. To show the structure of an organization compactly, you can use the vertical mode.

The documentation page will appeal both to beginners and experienced developers. A well-written beginner’s guide contains the source code with explanations. A bunch of guides will help with further configuration, so you’ll be able to create a diagram that better suits your needs. At the moment, there are three types of licenses available. The commercial license for the team of five or fewer developers costs $599, the enterprise license goes for $1299 per company, and the ultimate license has a price tag of $2899.

#javascript #web dev #data visualization #libraries #web app development #front end development #javascript libraries #org chart creator

How to Build a JavaScript Library

If you’re a developer it’s almost certain that you’ve used Code Libraries. In simple terms, a Code Library is a collection of reusable code that you can use in your program.

Like most of us, I know how to plug libraries into my programs and use them, but used to get scary for me each time I went through the actual source code of that particular library. Then I got to learning Vanilla JS and it all stopped seeming so scary. Vanilla JS is plain JavaScript code that you write without the use of any external libraries.

When it comes to building a JavaScript library that you will use to create a website, It’s important that you learn DOM manipulation using Vanilla JS before attempting to actually build it. The reason that it’s important is that you won’t have any dependencies and your library will be a simply plug-n-play for your users. You may be familiar with DOM manipulation using jQuery but that will create a dependency on jQuery and your library won’t function on a webpage that doesn’t include a reference to the jQuery library.

If you’re familiar with jQuery and want to learn more about DOM manipulation using Vanilla JS, you can read more about it here.

With all that said let’s dive into creating a JavaScript Library from scratch.

We’ll building an Image Lightbox. A lightbox is library that is used to view images on a webpage by filling the page with the image and de-emphasizing the background. Here’s what we’ll build.

#javascript-library #faisal-rashid #build-lightbox #lightbox #javascript

Top JavaScript Chart Libraries to Consider in 2021

You must know these top 10 JavaScript libraries before kickstarting your next project.

Table of Content

  • Introduction
  • What is a JavaScript Chart Library?
  • Top 10 JavaScript Chart Libraries of 2021
  • Conclusion

With the constant increase in data collection and its usage, the need to visualize this data as a chart or table has become more important for every organization. Developers have to combine various database records to create a dashboard and charts that everyone can easily interpret. But with chart libraries coming into the picture,  data visualization has become better. Now there are libraries and plugins that provide interactive charts. To learn more about this, go through this blog and see which are the libraries you can consider having the best charting experiences.

What is a JavaScript Chart Library?

The JavaScript chart library is nothing but a database visualization library that enables the developers to provide a graphical representation of the company’s data and important information. By using the visual elements of the library like graphs, maps, and charts, one can get access to see and understand the patterns, outliers, and trends of the data.

Top 10 JavaScript Chart Libraries of 2021

Here is the list of top JavaScript chart libraries that help organizations multiple data visualization options

1. Dygraphs

2. NVD3.js

3.  ChartJS

4.  Google Charts

5. Vis.js

6. Billboard.js

7. ApexCharts.js

8. ToastUI

9. Frappe Charts

10. AmCharts

#javascript-tips #java #chart-library #javascript

Rahul Jangid


What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */


Advantages and Disadvantages of JavaScript

#javascript #javascript code #javascript hello world #what is javascript #who invented javascript

Einar  Hintz

Einar Hintz


Visualizing data with NGX-Charts in Angular

Data Science, Data Analytics, Big Data, these are the buzz words of today’s world. A huge amount of data is being generated and analyzed every day. So communicating the insights from that data becomes crucial. Charts help visualize the data and communicate the result of the analysis with charts, it becomes easy to understand the data.

There are a lot of libraries for angular that can be used to build charts. In this blog, we will look at one such library, NGX-Charts. We will see how to use it in angular and how to build data visualizations.

What we will cover:

  1. Installing ngx-chart.

  2. Building a vertical bar graph.

  3. Building a pie chart.

  4. Building an advanced pie chart.

A brief introduction about NGX-Charts

NGX-Chart charting framework for angular2+. It’s open-source and maintained by Swimlane.

NGX-Charts does not merely wrap d3, nor any other chart engine for that matter. It is using Angular to render and animate the SVG elements with all of its binding and speed goodness and uses d3 for the excellent math functions, scales, axis and shape generators, etc. By having Angular do all of the renderings it opens us up to endless possibilities the Angular platform provides such as AoT, Universal, etc.

NGX-Charts supports various chart types like bar charts, line charts, area charts, pie charts, bubble charts, doughnut charts, gauge charts, heatmap, treemap, and number cards.

Installation and Setup

1. Install the ngx-chart package in your angular app.

npm install @swimlane/ngx-charts --save

2. At the time of installing or when you serve your application is you get an error:

ERROR in The target entry-point "@swimlane/ngx-charts" has missing dependencies: - @angular/cdk/portal

You also need to install angular/cdk

npm install @angular/cdk --save

3. Import NgxChartsModule from ‘ngx-charts’ in AppModule

4. NgxChartModule also requires BrowserAnimationModule. Import is inAppModule.


import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { NgxChartsModule }from '@swimlane/ngx-charts';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
  declarations: [
  imports: [
  providers: [],
  bootstrap: [AppComponent]
export class AppModule { }

Amazing! Now we can start using ngx-chart component and build the graph we want.

In the AppComponent we will provide data that the chart will represent. It’s a sample data for vehicles on the road survey.

#angular #angular 6 #scala #angular #angular 9 #bar chart #charting #charts #d3 charts #data visualisation #ngx #ngx charts #pie