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Acerca de las diferencias de 'myInstanceof' y javascript 'instanceof'
  • No sé por qué la salida es diferente ...
  • Otras situaciones son iguales
 const myInstanceof = (left, right) => { while (true) { if (typeof left.__proto__ !== 'object' || left.__proto__ === null) return false; if (left.__proto__ === right.prototype) return true; left = left.__proto__; } } let demo = Object.create(null); demo.__proto__ = Object.prototype; console.log("@", demo instanceof Object); // false console.log("#",myInstanceof(demo, Object)); // true
about 4 years ago · Juan Pablo Isaza
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