“The Object Does Not Support the Operation or Argument” JavaScript Error and Troubleshooting Steps in eCommerce Development

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As an eCommerce developer, you may encounter the “The Object Does Not Support the Operation or Argument” JavaScript error while developing web applications. This error means that an object in your code does not support the operation or argument you are trying to perform, resulting in an error message. This guide explains the underlying causes behind this error and provides step-by-step troubleshooting and resolution steps.

Investing the Code for the JavaScript Error

When faced with this error, the first step is to investigate where in your code the error is occurring. To do this, open up your browser’s developer console and look for the error message along with the line number where it occurred. This will give you a starting point for troubleshooting.

Potential Underlying Reasons for this JavaScript Error

There are several underlying reasons behind “The Object Does Not Support the Operation or Argument” JavaScript error. Some of the most common causes are:


  • Using methods that are not supported on certain objects or elements

  • Using incompatible data types in your code

  • Syntax errors in your code
  • JavaScript library conflicts

How Does this JavaScript Error Occur?

This error can occur while working on any eCommerce project that uses JavaScript. Common scenarios that can lead to this error include:


  • Attempting to manipulate the DOM with incorrect or unsupported methods
  • Working with older versions of JavaScript, or using libraries that are incompatible with your code

  • Using incompatible data types, such as strings instead of integers, in your code

Troubleshooting and Resolving Steps

Now that we understand the possible causes of this error, let’s go through the troubleshooting and resolution steps to fix it.

Step 1: Check the method compatibility

First, check that the method you are using is compatible with the object or element you are trying to manipulate. This error can occur if you try to call an unsupported method on an object. Refer to the browser’s documentation to see what methods are supported.

Code example:

      document.getElementById("example").style.visibilty = "hidden";

In the code example above, the “visibility” property is spelled incorrectly. This will throw the error since the method is unsupported.

Step 2: Double-check data types

Make sure you are using the correct data types in your code. Using incompatible data types can cause this error as well. To avoid this, make sure you are using the appropriate data type for each variable and input.

Code example:

      let sum = 2 + '2';

This code example concatenates the number 2 and the string “2”. This will result in the error since they are different data types.

Step 3: Look for syntax errors

Syntax errors can also cause this JavaScript error. To ensure that your code is correct, double-check your syntax for any errors.


Code example:

      function displayAlert() {
      alert("Hello World!");

This code example is missing parenthesis after the function name. This will cause the error since the syntax is incorrect.

Step 4: Check for library conflicts

If none of the above steps work, it’s time to check for JavaScript library conflicts. Library conflicts occur when two different libraries are used to implement a function or method, causing errors.


Code example:

      <script src="jquery.min.js"></script>
      <script src="prototype.min.js"></script>

The above code includes two different JavaScript libraries (jQuery and Prototype) that could conflict with one another.

Best Practices to Avoid this Error

To avoid encountering this error in the future, follow these best practices:


  • Check documentation and compatibility before using new libraries or frameworks

  • Regularly review your code for syntax errors

  • Use data types consistently and correctly throughout your code
  • Refactor your code periodically to avoid any conflicts


The “The Object Does Not Support the Operation or Argument” JavaScript error can occur during eCommerce development for a variety of reasons. However, by following the troubleshooting and resolution steps outlined in this guide, you can successfully identify and resolve the error. By incorporating the best practices to avoid this error, you can ensure robust and error-free eCommerce web applications.

Leverage Noibu to detect all such errors on your eCommerce website

Noibu is an eCommerce monitoring platform that proactively detects site errors in real time and provides actionable details you can use to efficiently resolve them without having to replicate, thus reducing error resolution time by 70%.

What’s more, the platform calculates the predicted impact of each error on the annual revenue so you can confidently prioritize those with the highest impact and boost your top line. So, even though JS and HTML errors are inevitable, they can be proactively monitored and efficiently resolved using a robust platform like Noibu. To experience it in action for your site, sign up for a free checkout audit and uncover site errors that could be hurting your online store’s conversions.

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