Closures example

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Sat Jan 14 2023 10:32:19 GMT+0000 (Coordinated Universal Time)

const counter = (function () {
  let privateCounter = 0;
  function changeBy(val) {
    privateCounter += val;
  }

  return {
    increment() {
      changeBy(1);
    },

    decrement() {
      changeBy(-1);
    },

    value() {
      return privateCounter;
    },
  };
})();

console.log(counter.value()); // 0.

counter.increment();
counter.increment();
console.log(counter.value()); // 2.

counter.decrement();
console.log(counter.value()); // 1.

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Creating private variables with closures

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Closures

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@vankoosh

Closures example function factory for events listeners using closures .find() shorthand Track scroll position Track viewport width

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Closures example

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