Javascript 它有时会说密码在实际有效时无效
我需要确保它以Javascript 它有时会说密码在实际有效时无效,javascript,Javascript,我需要确保它以Z开头,最少有8个字符,并且有一个*。 考虑这个函数: function validatePassword() { var strPassword //Request user enter their password then check its validity strPassword = prompt("Please Enter A Valid Password",""); while ((strPassword.length <7) || (strPa
Z
开头,最少有8个字符,并且有一个*
。
考虑这个函数:
function validatePassword()
{
var strPassword
//Request user enter their password then check its validity
strPassword = prompt("Please Enter A Valid Password","");
while ((strPassword.length <7) || (strPassword.indexOf('*') ==-1) || (strPassword.charAt(0) != 'Z')) {
{
alert("Your password is invalid, \n Please try again")
strPassword = prompt("Please Enter A Valid Password","");
}
//Outcome if password is valid
alert("Your password is valid")
//End while
}
}
函数validatePassword()
{
变量strPassword
//请求用户输入密码,然后检查其有效性
strPassword=prompt(“请输入有效密码”);
而((strPassword.length您有strPassword.length<7
哪个应该是strPassword.length<8
,或者它在其他要求上失败了
编辑:我会将有效密码的测试分离出来,并为每个测试打印出一条更有意义的消息。然后你会看到它失败的原因。你在最后一次或检查时有一个双{
。括号太多了
function validatePassword()
{
var strPassword = prompt("Please Enter A Valid Password","");
while ((strPassword.length <7) ||
(strPassword.indexOf('*') ==-1) ||
(strPassword.charAt(0) != 'Z'))
{
alert("Your password is invalid, \n Please try again");
strPassword = prompt("Please Enter A Valid Password","");
}
alert("Your password is valid");
}
函数validatePassword()
{
var strPassword=prompt(“请输入有效密码”);
而((strPassword.length这个是完整的
函数validatePassword(){
var-strPassword;
//请求用户输入密码,然后检查其有效性
strPassword=prompt(“请输入有效密码-以Z开头,最少8个字符,包括*,”);
while(strPassword==null | | strPassword.length何时失败?哪个测试密码会出错?请给出一个未按预期验证的示例密码。此外,看起来您希望它永远循环,或者直到它们输入有效密码。这对现实世界来说有点难看——我希望它不是真实的。
function validatePassword() {
var strPassword;
//Request user enter their password then check its validity
strPassword = prompt("Please Enter A Valid Password - Starts with Z minimum 8 chars including an *","");
while (strPassword==null || strPassword.length <8 ||
strPassword.indexOf('*') ==-1 ||
strPassword.charAt(0) != 'Z') {
alert("Your password is invalid, \n Please try again")
strPassword = prompt("Please Enter A Valid Password","");
} //End while
//Outcome if password is valid
alert("Your password is valid")
}
validatePassword();