Faire boucle while ne fonctionne pas avec invite. Javascript

Question

J'utilise le site Web de JS Bin pour écrire ceci.

les feux de boucle une seule fois quand je donne une mauvaise entrée (numérique):

function isInputLeapYear() 
{ 
    var year = -1; 

    var inputOk = true; 

    do{ 
     year = prompt("Please enter a year to check if it is a leap year \ninput year between 0-9999"); 

     if(year < 0 || 9999 < year) // check input 
     { 
     inputOk = false; 
     alert("\""+year+"\" is not a good year. \nThe input needs to be between 0-9999");    
     }; 


    }while(inputOk === false); 


    .... 
} 

Answer 1

Déplacez le var inoutOK = true dans la boucle de cette façon, il remet à zéro avant de demander à nouveau.

function isInputLeapYear() 
{ 
    var year = -1; 

    do { 
     var inputOk = true; 
     year = prompt("Please enter a year to check if it is a leap year \ninput year between 0-9999"); 

     if(year < 0 || 9999 < year) // check input 
     { 
      inputOk = false; 
      alert("\""+year+"\" is not a good year. \nThe input needs to be between 0-9999");    
     }; 


    } while(inputOk === false); 


    .... 
} 

Answer 2

function isInputLeapYear() 
    { 
     var year = -1; 

     var inputOk = false; 

     do{ 
      year = prompt("Please enter a year to check if it is a leap year \ninput year between 0-9999"); 

      if(year > 0 && 9999 > year) // check input 
      { 
      inputOk = True; 



      else 
{ 
alert("\""+year+"\" is not a good year. \nThe input needs to be between 0-9999"); 
} 
      }; 


     }while(inputOk === false); 


     .... 
    }