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JS Asigne el valor de la variable dependiendo del condicional

No sé por qué esto no funciona. ¿Algunas ideas?

 let a = 0 if (a == 0) {return let a = value0} else if (a == 1) {return let a = value1} else {return let a = valuex} console.log(a)

La consola siempre dice 0 . ¿Qué tengo que hacer?

about 4 years ago · Juan Pablo Isaza
3 answers
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0

No debe regresar de las if , solo asigne un valor a :

 let a = 0 if (a == 0) {a = value0} else if (a == 1) {a = value1} else {a = valuex} console.log(a)
about 4 years ago · Juan Pablo Isaza Report

0

Está declarando una variable cada vez dentro de la condición. Por lo tanto, las variables se incluirán entre corchetes, no fuera de esos corchetes. Entonces la variable global no cambiará en su caso. Y quitar retorno. La solución es

 let a = 0 if (a == 0) { a = value; } else if (a == 1) { a = value1; } else { a = value; } console.log(a)
about 4 years ago · Juan Pablo Isaza Report

0

El problema aquí es el alcance de 'a'. let nos permite declarar variables que están limitadas al alcance de una declaración de bloque, y una vez que el bloque se cierra, su alcance finaliza.

 let a = 0 //You don't need to redeclare a by using let //Also you don't need to return anything since it's not a function if (a == 0) { a = value0} else if (a == 1) { a = value1} else { a = valuex} console.log(a)
about 4 years ago · Juan Pablo Isaza Report
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