Question 50234 in Javascript Question posted in
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while loop won't stop even condition evaluates to false – Javascript

let checkOrFold = undefined
while(checkOrFold != 'check' && checkOrFold != 'fold'){
    let checkOrFold = prompt(`check or fold?`);
    console.log(checkOrFold != 'check' && checkOrFold != 'fold')
}
console.log('finish') here

even the console is logging false but prompt keeps popping up. What could be wrong?

Tried debugging. When ‘check’ or ‘fold’ is typed, console.log should show finish.

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3

Answers


  1. 0

    try matching the response till you get either check or fold as a response
    while(checkOrFold = ‘check’ || checkOrFold = ‘fold’)

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  2. 0

    You’re declaring another variable with the same name in the while loop. Remove the let from within the while loop and you should get what you’re looking for.

    let checkOrFold = undefined;
while(checkOrFold != 'check' && checkOrFold != 'fold'){
    checkOrFold = prompt(`check or fold?`);
    console.log(checkOrFold != 'check' && checkOrFold != 'fold');
}
console.log('finish');
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  3. 0

    You probably want to prompt outside the while loop once, so checkOrFold has a chance to receive an input. You also, by accident, setup a separate block scoped variable checkOrFold inside the loop, you need to use the same checkOrFold for the whole portion of code to work.

    Solution:

    let checkOrFold = undefined;

checkOrFold = prompt(`check or fold?`);
while(checkOrFold != 'check' && checkOrFold != 'fold'){
    checkOrFold = prompt(`check or fold?`);
    console.log(checkOrFold != 'check' && checkOrFold != 'fold')
}
console.log('finish')
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