我为我的网站制作了会话和本地存储的代码。虽然它似乎不起作用，我不知道是什么问题。我尝试了一切使它工作，但我做不到。问题是您可以注册本地和会话存储可以保存您的详细信息，但我无法登录。登录按钮始终处于禁用状态。
HTML CODE：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="logreg.js"></script>
</head>
<body>
<script>
document.write(outstate(isative()));
</script>
<form>
<input type="email" id="user" onblur="verlogin()" required>
<input type="password" id="pass" onblur="verlogin()" required>
<span id="mess"></span>
<button type="submit" disabled id="login" onclick="login();">LOGIN</button>
</form>
<input type="email" id="usermail" onblur="veruser();ch();" required>
<span id="veruser"></span>
<button style="text-decoration: none!important;display: none;" id="uservalue" value="0"></button>
<input type="password" id="password" onblur="verpass();ch();" required>
<input type="password" id="confirmpassword" onblur="verpass();ch();" required>
<span id="verpass"></span>
<button style="text-decoration: none!important;display: none;" id="passvalue" value="0"></button>
<input type="text" id="morada" required>
<input type="number" maxlength="9" id="nif" required>
<button type="submit" id="registar" onclick="registar();">REGISTER</button>
</body>
</html>
JAVASCRIPT CODE：
window.onload=function(){
if(sessionStorage.length==0){
var key='';
for(var i=0;i<localStorage.length;i++){
key = localStorage.key(i);
sessionStorage.setItem(key,'');
}
}
}
function verlogin(){
var nome=document.getElementById('user').value;
var pass=document.getElementById('pass').value;
document.getElementById('mess').innerHTML = '';
var key='';
var val='';
if(localStorage.length!=0){
for(var i=0;i<localStorage.length;i++){
key = localStorage.key(i);
val = localStorage.getItem(key);
if(nome!='' || pass!=''){
if(nome==key){
if(val.substr(0, val.indexOf('|'))==pass) {
document.getElementById('mess').style.color='green';
document.getElementById('mess').innerHTML = 'VALID';
document.getElementById("login").disabled = false;
}else{
document.getElementById("login").disabled = true;
document.getElementById('mess').style.color='red';
document.getElementById('mess').innerHTML = 'User or Wrong Password';
}
}else{
document.getElementById("login").disabled = true;
document.getElementById('mess').style.color='red';
document.getElementById('mess').innerHTML = 'User or Wrong Password';
}
}else{
document.getElementById('mess').innerHTML = '';
}
}
}else{
document.getElementById("login").disabled = true;
document.getElementById('mess').style.color='red';
document.getElementById('mess').innerHTML = 'Create an Account';
}
}
function login(){
var nome=document.getElementById('user').value;
sessionStorage.setItem(nome,'ativo');
window.location.href='index.html';
}
function veruser(){
var nome=document.getElementById('usermail').value;
document.getElementById('uservalue').value = 0;
var key='';
if(localStorage.length!=0) {
for (var i = 0; i < localStorage.length; i++) {
key = localStorage.key(i);
if (nome != '') {
if (nome == key) {
document.getElementById('uservalue').value = 0;
document.getElementById('veruser').style.color = 'red';
document.getElementById('veruser').innerHTML = 'User already in use';
} else {
document.getElementById('uservalue').value = 1;
document.getElementById('veruser').style.color = 'green';
document.getElementById('veruser').innerHTML = 'Valid';
}
} else {
document.getElementById('veruser').innerHTML = '';
}
}
}else{
document.getElementById('uservalue').value = 1;
document.getElementById('veruser').style.color = 'green';
document.getElementById('veruser').innerHTML = 'Valid';
}
}
function ch(){
var verp = document.getElementById('passvalue').value;
var veru = document.getElementById('uservalue').value;
document.getElementById("login").disabled = true;
if(verp==1 && veru==1){
document.getElementById("registar").disabled = false;
}else{
document.getElementById("login").disabled = true;
}
}
function verpass(){
var pass1=document.getElementById('password').value;
var pass2=document.getElementById('confirmpassword').value;
document.getElementById('passvalue').value = 0;
if(pass1!='' || pass2!=''){
if(pass1!=pass2){
document.getElementById('passvalue').value = 0;
document.getElementById('verpass').style.color='red';
document.getElementById('verpass').innerHTML = 'Passwords don't match';
}else{
document.getElementById('passvalue').value = 1;
document.getElementById('verpass').style.color='green';
document.getElementById('verpass').innerHTML = 'Valid';
}
}else{
document.getElementById('veruser').innerHTML = '';
}
}
function registar(){
var verp = document.getElementById('passvalue').value;
var veru = document.getElementById('uservalue').value;
var user=document.getElementById('usermail').value;
var pass=document.getElementById('password').value;
var mor=document.getElementById('morada').value;
var nif=document.getElementById('nif').value;
if(verp=='1' && veru=='1'){
localStorage.setItem(user,pass + '|'+mor);
sessionStorage.setItem(user,'ativo');
window.location.href='index.html';
}else{
alert('ERRO');
}
}
function logout(){
var key='';
var val='';
for(var i=0;i<sessionStorage.length;i++){
key = sessionStorage.key(i);
val = sessionStorage.getItem(key);
if(val=='ativo'){
sessionStorage.setItem(key,'');
window.location.href='index.html';
}
}
}
function isative(){
var key='';
var val='';
var user='';
for(var i=0;i<sessionStorage.length;i++){
key = sessionStorage.key(i);
val = sessionStorage.getItem(key);
if(val=='ativo'){
user = key;
}else{
user=0;
}
}
return user;
}
function outstate(ative){
var content='';
if(ative!=0){
alert(ative);
content+= '<h6>The user ' + ative+' is online<h6>';
content +='<button type="submit" onclick="logout();">LOGOUT</button>'
}else{
content +='<h6>Not Connected<h6>';
}
return content
}
我不知道该怎么办...... :(