Javascript while while循環終止而不執行語句

Question

我希望我的程序應該像下面這樣工作：它應該一直向用戶提供答案，直到正確的答案和最後的警報消息完成。

任何幫助，爲什麼它不是這樣woking？

var answer = prompt('What is the capital of Pakistan?'); 
while(answer != 'islamabad'){ 
    if(answer === 'islamabad'){ 
    alert('Your answer is correct!'); 
    }else if(answer != 'islamabad'){ 
    answer = prompt('Try again.'); 
    }else{ 
    alert('Well Done'); 
    } 
} 

Answer 1

這種情況if(answer === 'islamabad')永遠不會爲真：要檢查哪些檢查if != islamabad

while(answer != 'islamabad'){ 
    if(answer === 'islamabad'){ ◄ this will never be true 

嘗試使用以下條件後if == islamabad：

var answer = prompt('What is the capital of Pakistan?'); 
while(answer != 'islamabad'){  
    answer = prompt('Try again.'); 
} 
alert('Well Done');