Forex Trading

Candlestick Charts

Yes – all our JavaScript charts offer cross-browser and device compatibility. This means they will automatically appear in the right format no matter what browser or device your web application viewers are using. 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. You can set risingColor or color to show the rising or falling price in different colors. Some other frequently used customizations include zoomEnabled, animationEnabled, etc. Passes back the current legend zero-based page index and the total number of pages. Returns the vertical data value at yPosition, which is a pixel offset down from the chart container’s top edge.

  1. HAxis property that makes the horizontal axis a logarithmic scale (requires all values to be positive).
  2. Programming something yourself is one of the best ways to get a solid understanding of any topic.
  3. Moving on, we work on the grid settings and create a series for our data.
  4. All code and data are processed and rendered in the browser.

Returns the horizontal data value at xPosition, which is a pixel offset from the chart container’s left edge. Labels can span multiple lines if they are too long, and the number of lines is, by default, limited by the height of the available space. If false, will hide outermost labels rather than allow them to be cropped by the chart container. In focusTarget ‘category’ the tooltip displays all the category values.

Data format

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. For example, 20-day, 30-day and 90-day moving averages. I have added some significant events that occurred between 2020 and 2022 based on information from the TSMC Wikipedia page and various news portals. Let’s make our JS candlestick chart stand out with some visual enhancements! In this section, we will explore how to configure the theme of the chart.

This makes it useful to dynamically display data for both longer and shorter intervals. The shape of a candlestick is based on the relationship between the opening, closing, high, and low prices for the day. The wick of the candlestick shows the day’s highs and lows in comparison to the opening and closing prices. Start creating more sophisticated financial charts to describe the price changes of a security or currency with SciChart.js.

HAxis property that makes the horizontal axis a logarithmic scale (requires all values to be positive). JavaScript initiates the financial class instance to generate a candlestick chart by pointing to this canvas as a target. An HTML canvas layer has been created to render the output candlestick chart. We have seen many examples of creating ChartJS JavaScript charts.

Add the EMA technical indicator

Next, we create a stock chart and a plot to represent our data. We need to map our data properly to make it visually appealing. So, we use the mapAs() function to create a new mapping object responsible for mapping the data.


Our boilerplates integrate easily with all your JavaScript frameworks, including Angular, Vue, Blazor, React, Electron and Next.js. An object with members to configure the minor gridlines on the vertical axis, similar to the vAxis.gridlines option. 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.

Chart.js — Financial canvas (OHLC& candlesticks) tutorials

Previously, it only supported static candlestick values and had no way to update them dynamically. Therefore, I added a new updateCandlestick( candlestickID , open , close , high, low ) function that updates the values of a given candlestick. Google’s charting API supports a candlestick chart with the ability to change the values on the X axis – i.e. they are week days here but could be other things. 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 ‘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. 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.

An object with members to configure the minor gridlines on the horizontal axis, similar to the hAxis.gridlines option. Overrides the default format for various aspects of date/datetime/timeofday data types when used with chart computed gridlines. Allows formatting for years, months, days, hours, minutes, seconds, and milliseconds. More functionalities and features are there in the ChartJS module.

Given example shows JavaScript Candle Stick Chart along with HTML source code that you can edit in-browser or save to run it locally. Creating interactive charts for apps and sites with the help of dedicated JavaScript libraries for data visualization is not complicated at all, is it? Actually, even newbies to coding can create professional-looking interactive charts that meet their needs.

Creating Candlestick Charts in Javascript

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. The examples below shows how to create a candlestick chart with the required data formats.

HTML target to include ChartJs plugin to show a candlestick chart

So a few weeks ago, I finally read up on them and learned that they are actually quite easy to understand. 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. javascript candlestick chart Other related customizations are color, risingColor, etc. 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.

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