JavaScript Candlestick Charts Examples

candlestick chart javascript

They can also be used to predict market reversals which can be extremely helpful for professional investors, brokers, etc. Look at the lower wick of the candlestick to get the security’s lowest price for the specified time period. Candlestick patterns are particularly useful because they visually reveal key information that is hidden from the chart. To find the high price of the security for the chosen period, look at the candlestick’s upper wick. On the other hand, the closing price of a security is the top of a green candlestick or the bottom of a red candlestick.

Configuring the axis

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. Alright, it’s time to put all the pieces together and create our awesome candlestick chart for TSMC! Let’s start by writing some JS code to make our chart functional. The color of the candle can indicate whether the stock price went up or down during that period, with green or blue usually indicating a rise and red indicating a decline.

LightningChart JSJavaScript Candlestick Chart

Five or more columns, where the first column defines X-axis values or group labels, and each multiple of four data columns after that defines a different series. JavaScript Candlestick Chart forms a column with vertical lines to represent open, high, low & close values of a data point. Candlestick provides a visual support for making decisions in case of Stock, foreign exchange, etc. Candle Stick graphs are beautiful, interactive & supports animation, zooming, panning, annotation. Given example shows JavaScript Candle Stick Chart along with HTML source code that you can edit in-browser or save to run it locally. Let’s make our JS candlestick chart stand out with some visual enhancements!

JavaScript Candlestick Charts & Graphs

candlestick chart javascript

SciChart.js supports Candlestick Charts with custom colors per bar and a Date X-Axis. Candlestick charts can be animated, dynamically updated for real trading apps or combined with other series types to draw technical indicators or shapes. Moves the min value of the vertical axis to the specified value; this will be downward in most charts.

Why Use SciChart JavaScript Chart Library?

Ignored if this is set to a value greater than the minimum y-value of the data. Moves the max value of the vertical axis to the specified value; this will be upward in most charts. Ignored if this is set to a value smaller than the maximum y-value of the data. The minorGridlines.count option is mostly deprecated, except for disabling minor gridlines by setting the count to 0.

Let’s explore some fun ways to jazz up our chart and make it stand out from the rest. 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. To learn more about creating and customizing candlestick charts, see the candlestick chart documentation. Creating interactive charts for apps and sites with the help of dedicated JavaScript libraries for data visualization is not complicated at all, is it?

First off, we need to wrap our code in the anychart.onDocumentReady() function. This ensures that the code is executed only after the document has finished loading. It can also be used as a zoom tool, as well as provides interactivity to the charts. It was initially used by Japanese rice merchants and traders to monitor market prices and the daily momentum of prices for a century.

You can now plot the chart on the page with the render() method by using this simple instruction. All code and data are processed and rendered in the browser. The color of the chart border, as an HTML color string. You can enable legends by setting showInLegend to true.

Also called a Japanese candlestick chart, this chart type is one of the most popular forms of financial and stock data visualization. Each candlestick represents information about the open, high, low, and close price of the day. Candlestick charts are widely used in technical analysis of price movement patterns. 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. Loading the data is easy with the function, which we can use to load the data from the CSV file into our chart. This function will parse the CSV file and create a data table, which will be used to plot the chart.

candlestick chart javascript

Multi Series Candlestick chart are useful when you have to compare two or more data sets, each containing data points representing open, high, low and close values. Candlestick Graphs are mostly used to represent stock price, foreign exchange, commodity, etc. Given example shows stock price comparison of AT&T vs Verizon in 2016 using Multi Series Candlestick Chart. It also contains source code that you can edit in-browser or save to run locally. 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.

For example, 20-day, 30-day and 90-day moving averages. So you’ve build a basic candlestick chart in JS, with predefined styles and features. However, there are numerous things you can easily change if you need to. Now that the data is loaded, let’s use the mapAs() function to transform the data fields into the fields of the candlestick chart. A data point in an OHLC series has four values open, high, low, and close.

This tutorial will show you how to create a candlestick chart with the ApexCharts JavaScript library. If axis text labels become too crowded, the server might shift neighboring labels up or down in order to fit labels closer together. This value specifies the most number of levels to use; the server can use fewer levels, if labels can fit without overlapping. Moving on, we work on the grid settings and create a series for our data.

By signing up with SciChart.js, you’ll have access to over 80 chart examples, including customizable financial charts. Compared to other chart software vendors, our samples have more sophisticated features, all with simple to understand instructions and documentation. Your developers can also benefit from our responsive support team. A complete example of a candlestick chart synced with a bar chart is available on this page. The data with the prices are passed as an array of objects in the series array.

In this section, we will explore how to configure the theme of the chart. This is where the beauty of CDNs (Content Delivery Networks) comes in handy. 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. This type of JavaScript Candlestick chart is used to observe price fluctuations while trading.

Actually, even newbies to coding can create professional-looking interactive charts that meet their needs. Candlestick charts are often combined with line charts for showing different parameters in financial analysis. You can also combine Candlestick graph with spline, or area chart. The given example shows the stock price of Facebook in 2016 along with its net Income and total Revenue using combination of Candle stick and line chart. It also contains source code that you can edit in-browser or save to run it locally. The example below is the simplest configuration object that you can use to create a candlestick chart.

Weset bar.groupWidth to ‘100%’ to remove thespace between the bars. Once added, we can use the function theme() to change the theme or background color of the chart. Once added, we can use the range picker to facilitate the use of the scroller by providing two input fields that allow users to customize the start and end dates on the display. We need to map our data properly to make it visually appealing.

Let’s configure the x-axis to show Date and Time information. DateTime data with irregular intervals can be shown on the DateTime category axis. For example, the business days alone can be represented in a week here. Conversely, the candlestick turns red when the price opens and then falls. Investors can determine whether the closing price was higher or lower than the opening price by looking at the wide portion of the candlestick.

  1. Specify -1, which is the default, to automatically compute the number of gridlines based on other options.
  2. Let’s configure the x-axis to show Date and Time information.
  3. The below snippet shows the configuration of ticks with date and time origin for the JavaScript Candlestick chart application.
  4. Candlestick charts are a fantastic data visualization tool for tracking the price movements of stocks over a period of time.

The default interval for linear scales is [1, 1.5, 2, 2.5, 5], and for log scales is [1, 2, 5]. The color of the candlestick chart javascript horizontal gridlines inside the chart area. The direction in which the values along the horizontal axis grow.

If set to true, allows the drawing of tooltips to flow outside of the bounds of the chart on all sides. How many horizontal axis labels to show, where 1 means show every label, 2 means show every other label, and so on. Default is to try to show as many labels as possible without overlapping. HAxis property that specifies the title of the horizontal axis. HAxis property that makes the horizontal axis a logarithmic scale (requires all values to be positive).

So, we use the mapAs() function to create a new mapping object responsible for mapping the data. You can use visible property to show / hide a data series. You can also customize the color and thickness of line using lineColor and lineThickness. Other related customizations are color, risingColor, etc. Add() can be called with a single XOHLC object or with an array of such objects.

In the resulting JS candlestick chart, it is possible to observe how the EUR/USD currency pair traded over two years. Use the scroller to zoom into a shorter period if you want. That’s where I will put all the code for the JS candlestick chart. When hovering the plot area, it helps to gauge a precise position on the value scale, helps display tooltips for multiple series at a time.

This makes it useful to dynamically display data for both longer and shorter intervals. Start creating more sophisticated financial charts to describe the price changes of a security or currency with SciChart.js. If true, show colored squares next to the series information in the tooltip. The default is true when focusTarget is set to ‘category’, otherwise the default is false. Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed minorGridlines.

Each object in the chart can be interacted with, creating an animation that will aid in our understanding of the data shown. If you want to display the candles of a market session in real-time, you can easily do this with the updateSeries() method. Passes back the current legend zero-based page index and the total number of pages. The chart accepts further method calls only after the readyevent is fired.

Instantiate ApexCharts by providing the HTML element object used as a container of the chart as the first parameter, and the chart configuration object as the second parameter. Once you have a configuration object, you can create the instance of the chart. Sets a tooltip action to be executed when the user clicks on the action text. Removes the tooltip action with the requested actionID from the chart. Returns the vertical data value at yPosition, which is a pixel offset down from the chart container’s top edge.

The below snippet code is to generate some points using the ‘xydata’ library. The ‘xydata’ library provided by LightningChart, contains data generator functions that are used to generate sample data points in the form of x-data and y-data. We shall use the setTickStrategy() function on an axis.

This JavaScript Chart demo shows you how to create a JavaScript Candlestick Chart or Stock Chart using SciChart.js. In the SciChart.js demo – Candlestick Charts – volume bars are docked to the bottom of the chart. You can format the date labels on the XAxis by following the instructions on the Axis Label Formatting page.

Using the addSeries() method, we configure our series name to be TSMC using the name() function. And to add a playful touch, we use the iconType() function to show the rise and fall of the stock markets with arrowheads pointing up and down, respectively. Using JavaScript charting libraries is an absolute game-changer when it comes to creating stunning interactive visualizations. Luckily, you don’t need to be a technical wizard to use them. Based on mathematical formulas to place greater weight and importance to recent observations, it is a technical indicator widely used in financial charts to analyze data. Depending on a situation, traders may like to use different EMA periods.


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