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https://stackoverflow.com/questions/1728984/class-keyword-in-javascript
In ES6 the class keyword was introduced. The class keyword is no more than syntactic sugar on top of the already existing prototypal inheritance pattern. Classes in javascript is basically another way of writing constructor functions which can be used in order to create new object using the new keyword. Example
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function
An async function can contain an await expression that pauses the execution of the async function to wait for the passed Promise's resolution, then resumes the async function's execution and evaluates as the resolved value. The await keyword is only valid inside async functions.52%
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let
An explanation of why the name "let" was chosen can be found here. Scoping rules. Variables declared by let have their scope in the block for which they are defined, as well as in any contained sub-blocks. In this way, let works very much like var. The main difference is that the scope of a var variable is the entire enclosing function:
https://www.w3schools.com/js/js_reserved.asp
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in
The in operator returns true if the specified property is in the specified object or its prototype chain.4%
https://www.w3schools.com/jsref/jsref_forin.asp
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. ... CSS Reference CSS Browser Support CSS Selector Reference Bootstrap 3 Reference Bootstrap 4 Reference W3.CSS Reference Icon Reference Sass Reference.
https://stackoverflow.com/questions/1646698/what-is-the-new-keyword-in-javascript
But this time you have an explicit return statement so JavaScript interpreter will not do anything of its own. The thing to note in case III is that the object being created due to new keyword got lost from your radar. bar is actually pointing to a completely different object which is not the one which JavaScript interpreter created due to new ...
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