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¿Por qué cuando paso "q" la segunda vez en mi entrada no se rompe el ciclo?

Funciona la primera vez cuando paso "q" en mi entrada, pero después de eso, ya no funciona. ¿Por qué? Agradezco cualquier tipo de consejo.

 alert("Welcome to your To-Do List!") let userInput = prompt("What would you like to do?"); let toDo = []; while (userInput != "q") { let userInput = prompt("What would you like to do?"); console.log(userInput); }
about 4 years ago · Juan Pablo Isaza
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Debido a que está declarando una nueva variable de entrada de userInput dentro del bucle, debe reasignarla a la misma variable.

 alert("Welcome to your To-Do List!") let userInput = prompt("What would you like to do?"); let todos = []; while (userInput != "q") { todos.push(userInput); userInput = prompt("What would you like to do?"); } console.log(todos);

about 4 years ago · Juan Pablo Isaza Report

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Porque ha definido la variable userInput dentro del ciclo while nuevamente. Esto hace que tenga un alcance local para el ciclo while. Simplemente elimine let antes de la variable userInput en while loop.

about 4 years ago · Juan Pablo Isaza Report

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El problema es que el tercer let . Está creando otro userInput , con el alcance de ese bloque interno, que sombrea el externo.

Intenta cambiarlo a:

 alert("Welcome to your To-Do List!") let userInput = prompt("What would you like to do?"); let toDo = []; while (userInput != "q") { userInput = prompt("What would you like to do?"); console.log(userInput); }

Puedes leer más sobre let aquí .

about 4 years ago · Juan Pablo Isaza Report
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