react document documentMode not found

React Document DocumentMode Not Found Error: Explained

If you are a developer working with React, you might have come across the error message "React document documentMode not found." This error message appears when you attempt to access the documentMode property from the document object in React. This property is used to determine the document mode of the current page.

If you encounter this error, there are a few possible solutions:

Solution 1: Check Browser Compatibility

The documentMode property is only available in Internet Explorer. If you are using a different browser, this property will not be available. Make sure that you are testing your code in Internet Explorer if you intend to use this property.

Solution 2: Check if document object is available

If you are using the document object in your React code, you need to ensure that it is available before attempting to access any of its properties. You can check if the document object exists by using the window.document property instead:

      if (window.document) {
        // access document object properties here
      }
    

Solution 3: Modify Your Code

If neither of the above solutions work, you may need to modify your code to avoid using the documentMode property altogether. You could use a different method to determine the document mode, or you could use feature detection instead of relying on the documentMode property. Here is an example of how you could use feature detection:

      if (document.implementation && document.implementation.hasFeature && document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1")) {
        // your code here
      }
    

By using the document.implementation.hasFeature method, you can determine if a particular feature is supported by the browser. In this example, we are checking if SVG version 1.1 is supported by the browser.

Conclusion:

The React document documentMode not found error message can be frustrating, but there are several solutions you can try to resolve it. By checking browser compatibility, ensuring that the document object is available, or modifying your code to use feature detection, you can avoid this error and continue building your React application with confidence.