Hi All, In this post, I would like to share my thoughts how to resolve the issue Cannot read property ‘settings’ of undefined in jQuery. It might be simple. But it took time to resolve this issue. It will easy for you when you stuck with these issues.

Cannot read property 'settings' of undefined - jQuery snippet to solve the issue

Cannot read property ‘settings’ of undefined – jQuery snippet to solve the issue by Anil Labs

In the realm of web development, encountering unexpected errors is a common occurrence. One such issue that can leave developers scratching their heads is the infamous “Cannot read property ‘settings’ of undefined” error. This error often arises when working with jQuery, a popular JavaScript library used for enhancing the interactivity and functionality of websites.

If you’ve stumbled upon this error, you’re not alone. Fortunately, there’s a solution at hand. In this article, we’ll dive deep into the root causes of this error, dissecting why it occurs, and then introduce you to a handy jQuery snippet that can help you resolve it effectively.

By the end of this guide, you’ll not only understand why this error occurs but also have a practical solution in your toolkit to overcome it. Whether you’re a seasoned developer or just starting your journey in web development, this article aims to provide clarity and guidance in troubleshooting this common issue. Let’s embark on the journey to fix the “Cannot read property ‘settings’ of undefined” error and ensure your jQuery-powered web projects run smoothly.

Generally, we add the jQuery attribute to add a rule for required like

jQuery code

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$( "#attrName" ).rules( "add", "required");

If we use like we will get the issue like below

jQuery error

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Uncaught TypeError: Cannot read property 'settings' of undefined
    at n.fn.init.rules (VM507 jquery.validate.min.js:4)
    at log (create:815)
    at Object.<anonymous> (create:616)
    at Function.each (jquery-2.1.3.min.js:2)
    at Object.<anonymous> (create:613)
    at j (jquery-2.1.3.min.js:2)
    at Object.fireWith [as resolveWith] (jquery-2.1.3.min.js:2)
    at x (jquery-2.1.3.min.js:4)
    at XMLHttpRequest.<anonymous> (jquery-2.1.3.min.js:4)

So, to resolve this issue we need to change the adding rule to attribute

jQuery code to resolve

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setTimeout(function() {
        $('#attrName').rules('add', { required: true });
}, 0);

This will resolve your issue. Hope it will solve your issue also.


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