OrchardCMS/OrchardCore · error · Error

msg

Error message

msg

What it means

jQuery.error is jQuery's public API for throwing errors: it simply throws new Error(msg). Any internal jQuery code path (e.g. failed animations, unsupported selector syntax passed to jQuery internals, .get() on empty sets) or user code calling $.error will surface this exception with whatever message was passed.

Solutions

1. Read the actual msg in the stack trace to find the real failing call
2. Fix the caller passing the invalid argument to jQuery or the plugin
3. Replace direct $.error usage in your own code with standard throw new Error
4. Upgrade jQuery from 3.4.1 (which has known issues) to a maintained 3.7.x release

Example fix

// before
$.error('bad input');
// after
if (!input) { throw new Error('bad input'); }

null

null

try { $(selector).doSomething(); } catch (e) { if (e instanceof Error) { console.error('jQuery.error:', e.message, e.stack); } }

When it happens

Trigger: Calling $.error('message') directly; internal jQuery failures that route through jQuery.error, e.g. invalid selector strings, malformed animation parameters, or jQuery.fn.get with a NaN index in some plugin code paths.

Common situations: Plugins that misuse jQuery internals; developers deliberately using $.error to abort on bad input; debugging stack traces pointing into core.js at the throw site.

Understand the failure class

Background: "must be a positive integer", "cannot be empty", "invalid argument": how invalid-argument errors work across open-source libraries — this error's family across 33 libraries.

Related errors

• msg
• msg
• nestedSortable: Please check that the listType option is…
• jQuery requires a window with a document
• Syntax error, unrecognized expression:

AI-assisted analysis of OrchardCMS/OrchardCore@4306c0717f (2026-09-13). Data as JSON: /api/errors/0d5bba68519a7cee. Report an issue: GitHub.

Appendix: source

Thrown at src/OrchardCore.Modules/OrchardCore.Resources/wwwroot/Vendor/jquery-3.4.1/core.js:206

				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend( {

	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	isPlainObject: function( obj ) {
		var proto, Ctor;

		// Detect obvious negatives
		// Use toString instead of jQuery.type to catch host objects
		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
			return false;
		}

		proto = getProto( obj );

		// Objects with no prototype (e.g., `Object.create( null )`) are plain
		if ( !proto ) {
			return true;

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