![]() The this value is different in each context. Static methods, static field initializers, and static initialization blocks belong to the static context. Constructors, methods, and instance field initializers ( public or private) belong to the instance context. This is the case for iterative array methods, the Promise() constructor, etc.Ī class can be split into two contexts: static and instance. ![]() Which object depends on how this is being invoked (used or called). Callbacks are typically called with a this value of undefined (calling it directly without attaching it to any object), which means if the function is non–strict, the value of this is the global object ( globalThis). In JavaScript, the this keyword refers to an object. Sure that function acts like a closure for its contents but Its by far a different use case. When a function is passed as a callback, the value of this depends on how the callback is called, which is determined by the implementor of the API. This means that in your example you are instantiating a new obiect defined by its constructor (anonymous function expression) and its invoked via the new operator, not by calling the finction as in the IIFE example. When using these methods, the this substitution rules above still apply if the function is non-strict. Using (), you can create a new function with a specific value of this that doesn't change regardless of how the function is called. Copy and paste or directly input your code into the editor above, click the Find
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