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‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!
Version 2 also features support for async functions syntax, the future object destructuring syntax, and JSX, which is JavaScript with interspersed XML elements.
How to Do Addition in JavaScript. Performing JavaScript addition may seem like a simple task, until you discover the number of different ways you can add them.
Functions create a block of code in which you can, for example, perform actions such as input data validation before you convert and display numbers in common or foreign currency: ...
Microsoft has backed a proposal to bring optional and erasable type syntax to JavaScript in an effort to make its TypeScript language both faster and easier to use.