What is this? this is a special keyword in Javascript that refers to the executing environment of the function: If you execute a function in the global scope, this will be bound to the window If you pass the function to a callback for an event handler, this will be bound to the DOM element … Read more
As the MDN docs states An arrow function does not have its own this; the this value of the enclosing execution context is used So you would think of onClick={(e) => this.goToStore(e)} as being an anonymous function which can be written as (e) => { return this.goToStore(e) } Now here in this anonymous function this … Read more
this means pointer to the object, so *this is an object. So you are returning an object ie, *this returns a reference to the object.
The ref keyword causes Pass by Reference semantics – that is, if the variable is re-assigned in the called function, it will re-assign the variable in the caller as well. Obviously, this only works if a variable2 (which can be re-assigne to) is directly passed as the argument and will not work if an arbitrary … Read more
No, there is no way. Functions detached from objects lose the original context. And destructing in JavaScript has no syntax to do something with extracted values on the fly.
this has nothing to do with scope. It is determined by context. greeting() calls the function with no context, so this is the default object (window in a browser).
A few things: Most people will suggest something like var self = this because it’s fast and easy. But var self = this does not separate the view object entirely from the view logic, which coming from a more formal C# background and looking at your code, sounds like something you want to do. In … Read more
You can assign the object this points at: *this = XY; But you can’t assign the direct value of this: this = &XY; // Error: Expression is not assignable
No, only use this when you have a name conflict such as when a method parameter has the same name as an instance field that it is setting. It can be used at other times, but many of us feel that it simply adds unnecessary verbiage to the code.
From MDN documentation Static method calls are made directly on the class and are not callable on instances of the class. Static methods are often used to create utility functions. For more please see=> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static You can do something like this => this.constructor.staticMethod()); to call static method. class StaticMethodCall { constructor() { console.log(StaticMethodCall.staticMethod()); // ‘static … Read more