每次用户输入为null或错误时,我都会尝试显示提示。只有在输入正确后,才会出现提示并显示警报。这是我的代码:
var pass=prompt("Please enter the password to view your recovery code.");
while(true){
if(pass=="abc"){
break;
}
else
var pass=prompt("Please enter the password to view your recovery code.");
}
alert("correct");
现在,即使我给出了正确的值(abc
(,提示仍然存在,并且alert
永远不会显示。为什么?
错误是因为您用var pass=prompt(...)
行重新定义了变量pass
您还应该考虑使用let
而不是var
此外,我已经更新了条件,确实让更干净了一点
let pass = prompt("Please enter the password to view your recovery code.");
while(pass !== "abc"){
pass = prompt("Please enter the password to view your recovery code.");
}
alert("correct");
它可能比这更简单。在循环中添加提示,如果密码匹配则中断。
while (true) {
const pass = prompt('Please enter the password to view your recovery code.');
if (pass === 'abc') {
console.log('Correct!');
break;
}
}