Creating a Candlestick Chart with JS to Analyze Stocks DEV Community

Javascript’s versatility, speed, and vibrant ecosystem make it the perfect choice for building interactive, real-time candlestick charts. With a wide selection of charting libraries, you can quickly build financial data visualizations that provide valuable insights for technical analysis. By following best practices and JavaScript’s robust features, it can create candlestick charts tailored precisely to your application’s needs. It is very easy to create interactive charts for apps and websites using specialized JavaScript tools for data visualization like LightningChart JS. Anyone with a basic understanding of coding can create professional interactive charts. I hope this JavaScript Candlestick chart tutorial was useful in outlining the easy steps needed to create your own initial JS candlestick chart.

Customers prefer those apps that offer detailed charting in different forms and views for advanced asset trading. You can use this customer choice by getting interactive HTML5 charting libraries from Barchart Solutions. First off, the charting library lets you display up to 68 chart types out of the box. It also provisions custom chart drawing functionalities so your users can create their charts. Read on to learn more about financial charting libraries, standard features, and some popular names in the market.

1. There are 15 automated indicators like MACD, Bollinger Bands, Moving Average, etc.
2. When the price of the security starts at a specific price and then rises, the candlestick turns green.
3. Now that the data is loaded, let’s use the mapAs() function to transform the data fields into the fields of the candlestick chart.
4. Before joining Bito, he significantly contributed to Engati, where he played a pivotal role in enhancing and developing advanced software solutions.
5. The library also comes with multiple chart layouts (like the grid), with the ability to sync them by symbol, aggregation, date range, appearance, and indicators.
6. To set up the data for the candlestick chart, we will use the stock data of TSMC, which I have compiled into a CSV file available at this link.
7. SciChart.js supports Candlestick Charts with custom colors per bar and a Date X-Axis.

The Playground Link is also available for you to play with the interactive version of this visualization. And the entire code for the basic JS candlestick chart has been placed below for your convenience. And finally, we specify the container of our chart as the HTML div with the id “container”. Our JavaScript-based candlestick chart for TSMC is ready to be rendered with the draw() function. To implement a candlestick chart, we can use the Candlestick class from plotly’s Graph Objects sub-library.

DateTime axisTickStrategy

The candlestick chart is initialised in a function createCandlestickChart(). This sets up the chart with a Candlestick series, Line series for moving averages, Zooming and Panning behaviour, a Cursor with legend and Scrollbar or ‘overview’ control. Financial institutions like investment banks, brokerages, and cryptocurrency exchanges rely on Javascript charting to deliver real-time market data visualizations to their users. By the way, AnyChart has its own online editor for data visualizations like charts, maps, and dashboards, called AnyChart Playground. This candlestick chart is available right there so you can play with its code in a convenient way. Since candlestick charts can process table-formatted data, we create a table using the table() method and add our data to it with the addData() method.

The candle sticks are plotted based on these four values to visualize price movement. Each candlestick supplies a simple and visually appealing picture of price action. A trader can instantly compare the relationship between the open and close as well as the high and low prices. They can also be used to predict market reversals which can be extremely helpful for professional investors, brokers, etc. As a stock price moves in one direction, individual candlesticks form various patterns that traders can use to identify and predict major support and resistance levels.

Highcharts Stock is dedicated to the financial apps that deal with the stock market, crypto assets, and all other investment products. The charting tool is SVG-based and built on the JavaScript charting libraries from Highcharts. Then, you can use APIs for various market data like equities, futures, bonds, commodities, forex, and cryptocurrencies to feed the data set to the charting library. Using GPU or WebGL rendering, your app can visualize pixel-perfect and professional technical; charts like candlesticks, scatterplot, Heikin-Ashi, etc. Small development teams can build full-functional financial apps with technical data visualizations simply by importing the library codes. The dynamic capabilities of Javascript make candlestick charts the go-to choice for today’s data-driven traders.

We can simply add the links to the Core, Stock, and Data Adapter modules in the section of our HTML page. We’ll also need to add the CSS links for UI and fonts to ensure our candlestick chart looks top-notch. SciChart.js ships with over 80 JavaScript Chart demos which you can browse, view the source code and see related documentation. Build incredible complex dashboards with SciChart.js, our High Performance JavaScript Chart Library. DXcharts has the biggest number of drawings – 42, so traders can draw their trend lines, support levels, and shapes, add notes, and select from over 100 indicators.

LightningChart JS Trader

Do you have trading data, looking for a way to effectively visualize it for your website or app project? This tutorial will break down the process needed to create such a chart into simple steps and provide a detailed explanation of the code. The FusionCharts JavaScript financial charting libraries allow your developers to build simple charts like columns, lines, pies, etc. Furthermore, your team can also develop domain-specific visualizations, like stock charts, radar charts, and heatmaps. Furthermore, the JS charting library also supports downloading the stock market, crypto market, and financial charts as image formats on the user side. Also, the library integrates instantly with popular JS frameworks like Angular, React, Vue.js, Ember.js, Meteor, and more.

JavaScript Multi Series Candlestick Charts

Among other notable features to engage users javascript candlestick chart are instant screen capture and social sharing to Twitter, Telegram, and other social media groups and profiles. Before displaying any real-time data, I had to add support for it to my candlestick chart class. However, my first solution was only able to draw static diagrams and had no interactivity, so there was no way to use it for displaying real-time price data. To remedy this situation, I put some more work into it, added zooming and technical indicators, and connected it to a real-time WebSocket candlestick stream via the Binance API. Candle Stick chart is a form of Column Chart which is used to represent price movements in a given time span. In Candle Stick Charts, Opening and Closing price forms the real body and a vertical Line (“Tail” or “Wick”) represents the High and Low values.

1. The charting libraries empower you to create stock market and financial investment charts with zooming, panning, and animation at superior performance levels.
2. Candlestick charts are commonly used in financial analysis to display the open, high, low, and close prices of a security or asset over a specific time period.
3. That’s where I will put all the code for the JS candlestick chart.
4. Depending on a situation, traders may like to use different EMA periods.
5. The second parameter is a mutator and is optional, only used when styling or modifying elements of the tick strategy.
6. Candlestick charts are a fantastic data visualization tool for tracking the price movements of stocks over a period of time.

Candlestick Charts for traders

Look at the lower wick of the candlestick to get the security’s lowest price for the specified time period. More functionalities and features are there in the ChartJS module. Step 5 overlaps a line chart of close points on the rendered candlestick chart. In this article, we will see JavaScript code for creating a candlestick chart using ChartJs. So, we use the mapAs() function to create a new mapping object responsible for mapping the data. This is where the beauty of CDNs (Content Delivery Networks) comes in handy.

The candlestick and OHLC charts are for showing financial data in a graph. Both these charts look mostly similar but differ in showing the ‘open’ and ‘close’ points. Now that the data is loaded, let’s use the mapAs() function to transform the data fields into the fields of the candlestick chart. The theme changes the face, feel, and layout of the candlestick chart. To get started, we need to add the following CDN link in the head section of our HTML page.