[英]JavaScript I need help validating and making an error message appear
function Pin(valid) {
var Num;
var Attempts = 0;
while (Attempts < 3) {
Attempts = (Attempts + 1);
Num = prompt('Enter the pin number');
if (Num != '12345') {
alert('Wrong pin number, this is attemp ' + Attempts + ' of 3');
} else {
alert('Welcome!');
valid = true;
return valid;
return;
}
}
}
在显示3次失败的尝试并结束程序后,如何向我显示错误消息,我需要帮助。 我尝试了很多方法,但似乎无法弄清楚。
如果循环结束,则表示用户超出了最大尝试次数。 因此,在此处显示错误消息。
function Pin(valid) {
var Num;
var Attempts = 0;
while (Attempts < 3) {
Attempts++;
Num = prompt('Enter the pin number');
if (Num != '12345') {
alert('Wrong pin number, this is attemp ' + Attempts + ' of 3');
} else {
alert('Welcome!');
return true;
}
}
alert('Too many failed attempts, giving up');
return false;
}
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