JavaScript多条目表单验证

Question

我正在尝试使用Javascript在页面重定向之前验证用户输入。用户可以输入学生ID、姓名或性别，根据他们的输入，他们将被重定向到URL。

然而，我的javascript中似乎没有正确地获取多个条目，当单击提交按钮时也没有发生任何事情。

我尝试了不同的解决方案，我在这里找到了。

请参阅下面的JavaScript代码；

var attempt = 3; // Variable to count number of attempts.
// Below function Executes on click of login button.
function validate(){
var username = document.getElementById("studentid").value;
if ( studentid == "12345" || studentid == "Daniel" || studentid == "Boy"){
alert ("Correct Input");
window.location = "https://www.google.com"; 
// Redirecting to other page.
return false;
}
else{
attempt --;// Decrementing by one.
alert("ATTENTION!nInvalid student ID!nNot associated with any studentnYou have left "+attempt+" attempt;");
// Disabling fields after 3 attempts.
if( attempt == 0){
document.getElementById("studentid").disabled = true;
document.getElementById("submit").disabled = true;
return false;
}
}
}

我尝试使用以下解决方案；

if ( studentid == "#12345, #Daniel, #Boy"));{
alert ("correct input");
window.location = "https://www.google.com"; 
// Redirecting to other page.

if ( studentid == '12345', 'Daniel', 'Boy'){
alert ("correct input");
window.location = "https://www.amazon.com"; 
// Redirecting to other page.

Answer 1

经过这么多次尝试，我终于做对了！

var attempt = 3;
function check(form)
{
if(form.studentid.value == "12345" || form.studentid.value == "DANIEL" || form.studentid.value == "BOY")
{
window.location.replace('https://www.google.com')
return false;
}
else
{
attempt --;// Decrementing by one.
alert("ATTENTION!nInvalid student ID!nNot associated with any student!nYou have left "+attempt+" attempt;");
// Disabling fields after 3 attempts.
if( attempt == 0){
document.getElementById("studentid").disabled = true;
document.getElementById("submit").disabled = true;
return false;
}
}
}