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Some features that every JavaScript developer should know in 2025
The list of JavaScript features that every web developer should know in 2025 in order to efficiently code in JavaScript.
Returns the first element produced by the iterator that satisfies the provided testing function. WeakMap and WeakSet are similar to Map and Set except that they don't allow primitive values for their keys and they lack iterators. Recently JavaScript has added support for boolean operations with Set objects.
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