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2019年の書き初め。Proxyを使って2019を🐗🐗🐗🐗に書き換える

Posted at

あけましておめでとうございます。
書き初めがてらProxyを使って、配列の値が2019のものだけ🐗🐗🐗🐗に書き換える、実に他愛もないコードを書いてみました。

MDN - Proxy
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Proxy

const rewriteToBoar = {
  set(obj, prop, value) {
    if (value === "2019") {
      obj[prop] = "🐗🐗🐗🐗";
      return true;
    } else {
      obj[prop] = value;
      return true;
    }
  }
};

const years = new Proxy([], rewriteToBoar);
years.push("2017");
years.push("2018");
years.push("2019");
years.push("2020");
console.log(years); // => [ '2017', '2018', '🐗🐗🐗🐗', '2020' ]

今年もよろしくお願いします。

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