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javascript: contenido de variable no cambiado

Tengo un código para verificar si el correo electrónico ya existe usando mongoose. Dentro de countDocuments, se muestra verdadero, mientras que fuera de él se muestra falso.

 let emailError = false; // Unique Email Visitor.countDocuments({email}, (err, count) => { if(count>0){ emailError = true; // Displaying true console.log(emailError); } }); // Displaying false console.log(emailError);

Creo que tengo un problema con el alcance y la forma en que accedo a la variable, pero no sé el problema exacto y la forma de resolverlo.

about 4 years ago · Juan Pablo Isaza
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