Скачать или смотреть Resolving the Cannot read properties of undefined (reading 'nodeName') Error in DevExpress

Learn how to fix the `Cannot read properties of undefined (reading 'nodeName')` error when working with DevExpress and jQuery by updating your JavaScript library versions.
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This video is based on the question https://stackoverflow.com/q/76075934/ asked by the user 'Chris' ( https://stackoverflow.com/u/1136708/ ) and on the answer https://stackoverflow.com/a/76078237/ provided by the user 'Mahesh Thorat' ( https://stackoverflow.com/u/8550543/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding and Resolving the Cannot read properties of undefined (reading 'nodeName') Error in DevExpress

If you've ever encountered the frustrating error message Uncaught TypeError: Cannot read properties of undefined (reading 'nodeName') while working with the DevExpress Data Grid in a JavaScript application, you’re not alone. This error can arise from various issues, but it often relates to JavaScript library compatibility problems. In today's guide, we will break down this error and provide a clear path to resolving it.

The Problem

You might experience this error when trying to display an alert immediately after your Data Grid is set up. Here's a brief summary of what typically happens:

You have a Data Grid implemented with DevExpress for displaying data.

Upon clicking a row in the grid, an alert shows correctly.

However, the immediate alert call after setting up the grid leads to the nodeName error.

This issue is likely rooted in the version compatibility of the libraries you are using.

The Root Cause

The error you encountered primarily results from the jQuery version you are using in your project. In this case, your project utilizes jQuery 1.11.3, which may not be compatible with the version of DevExpress you are employing.

Solution

To fix the problem, you simply need to update your version of jQuery. The newer versions are often more stable and compatible with updated libraries. Here’s how you can resolve the issue step-by-step:

Step 1: Update jQuery

Replace your current jQuery script in your HTML with the following line to use jQuery 3.6.0:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Review Your HTML Structure

Here is how your updated HTML should look:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Update Your JavaScript Initialization

Ensure your JavaScript for initializing the Data Grid remains as follows:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By simply updating to jQuery 3.6.0, the compatibility issue is resolved, and you should no longer encounter the nodeName error. Always make sure to check your library versions against those required by the frameworks you are using when running into such errors. This small adjustment can save you time and frustration in the long run.

Now, you're all set to work confidently with your Data Grid without running into unexpected errors. Happy coding!