Unleashing the Power of Tradingview Charting Library: OnClick Event to Get Price

If you’re a developer or a trader looking to create a customized trading platform or application, you’re likely familiar with the Tradingview Charting Library. This powerful tool allows you to create interactive and dynamic charts that can elevate your trading experience. One of the most useful features of the Tradingview Charting Library is the ability to trigger an OnClick event on a chart, which enables you to retrieve the price data of the clicked point. In this article, we’ll dive deep into how to implement this feature and unlock the full potential of your charting application.

Why Use OnClick Event?

The OnClick event is an essential feature in the Tradingview Charting Library that enables you to interact with your chart in a more intuitive way. By triggering an OnClick event, you can retrieve the price data of the clicked point, which can be used for various purposes, such as:

• Creating a custom alert system that notifies you when a specific price level is reached
• Developing a strategy that executes trades based on specific price levels
• Enhancing your chart with additional information, such as displaying the price value on hover or click

Getting Started with Tradingview Charting Library

1. Include the Tradingview Charting Library script in your HTML file: <script src="https://cdn.tradingview.com/cht-js-library.js"></script>
2. Create a container element for your chart: <div id="chart-container"></div>
3. Initialize the charting library and create a new chart instance:

       new TradingView.widget({
           "container_id": "chart-container",
           "symbol": "AAPL",
           "interval": "1m",
           "theme": "Light",
           "toolbar_bg": "#f1f3f6",
           "enable_publishing": false,
           "withdateranges": true,
           "range": "12m"
       });
       

Implementing the OnClick Event

Now that you have your chart set up, let’s move on to the main topic: implementing the OnClick event. The Tradingview Charting Library provides an onClick method that you can use to attach a callback function to the chart. This function will be executed whenever a user clicks on the chart.

chartRef = new TradingView.widget({
    // chart options
});

chartRef.onChartEvent("click", function(event) {
    // event handler function
});

In the code snippet above, we’re using the onChartEvent method to attach a callback function to the click event. The callback function will receive an event object as an argument, which contains information about the clicked point.

Accessing the Price Data

Now that you have the OnClick event triggered, you can access the price data of the clicked point using the event object. The event object contains several properties, including:

Property	Description
time	The timestamp of the clicked point in milliseconds
price	The price value of the clicked point
point	The point object that contains the x and y coordinates of the clicked point

You can access the price data using the event.price property. For example:

chartRef.onChartEvent("click", function(event) {
    console.log("Clicked price:", event.price);
});

In this example, we’re logging the clicked price to the console. You can replace the console.log statement with your own logic to handle the price data.

Advanced Techniques

Now that you have the basics of the OnClick event down, let’s explore some advanced techniques to enhance your charting application:

Displaying the Price Value on Hover

You can use the OnClick event to display the price value on hover by attaching a mouseover event to the chart. Here’s an example:

chartRef.onChartEvent("mouseover", function(event) {
    var priceValue = event.price;
    // display the price value on hover
    document.getElementById("price-value").innerHTML = priceValue;
});

Creating a Custom Alert System

You can use the OnClick event to create a custom alert system that notifies you when a specific price level is reached. Here’s an example:

chartRef.onChartEvent("click", function(event) {
    var priceValue = event.price;
    if (priceValue > 100) {
        alert("Price has reached 100!");
    }
});

Conclusion

In this article, we’ve covered the basics of implementing the OnClick event in the Tradingview Charting Library to retrieve the price data of the clicked point. We’ve also explored advanced techniques to enhance your charting application, such as displaying the price value on hover and creating a custom alert system. With this knowledge, you’re ready to take your trading platform to the next level and unlock the full potential of the Tradingview Charting Library.

Remember to experiment with different event handlers and callbacks to customize your charting application to your specific needs. Happy coding!

FAQs

Frequently asked questions about the Tradingview Charting Library and OnClick event:

• Q: What is the Tradingview Charting Library?
• A: The Tradingview Charting Library is a JavaScript library that allows you to create interactive and dynamic charts for your trading platform.

• Q: How do I implement the OnClick event in the Tradingview Charting Library?
• A: You can implement the OnClick event by attaching a callback function to the chart using the onChartEvent method.

• Q: How do I access the price data of the clicked point?
• A: You can access the price data of the clicked point using the event object, which contains the price property.

Frequently Asked Question

Get ready to dive into the world of Tradingview Charting Library and uncover the secrets of capturing price data with an OnClick event on your chart!