# invokeMethod(_:withArguments:) Calls the named JavaScript method on the value. ``` func invokeMethod(_ method: String!, withArguments arguments: [Any]!) -> JSValue! ``` ## Parameters `method` The name of a method on the value; that is, of a field whose contents are a function value. `arguments` The parameters to pass to the method. The objects in this array must be other [`JSValue`](/documentation/JavaScriptCore/JSValue) objects or objects that can be converted to JavaScript values using the methods listed in the Creating JavaScript Values section in [`JSValue`](/documentation/JavaScriptCore/JSValue). ## Return Value The result of calling the value as a constructor, or `nil` if the value cannot be treated as a JavaScript constructor. ## Discussion Calling this Objective-C method first uses the [`forProperty(_:)`](/documentation/JavaScriptCore/JSValue/forProperty(_:)) method to look up the named field of the JavaScript value. Then, JavaScriptCore treats that field’s contents as a JavaScript function and sets the JavaScript `this` keyword to refer to this [`JSValue`](/documentation/JavaScriptCore/JSValue) instance. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)