<p class="center" >
name:<br> <input type="text" id="nameinput" required><br>
email:<br><input type="email" id="emailinput" required><br>
password:<br><input type="password" id="passwordinput" required><br>
<button id="registerbutton" onclick="co`enter code here`ntainsObject()">Register<button>
<p><br><p id="feedback"></p><br>
<button onclick="clearStorage()">Clear Storage</button>
<body id="body">
<script>
var userArray = [];
var person = {};
var newemail;
var oldemail;
var feedback = document.getElementById("feedback");
person.name = document.getElementById("nameinput").value;
person.email = document.getElementById("emailinput").value;
person.password = document.getElementById("passwordinput").value;
JSON.parse(localStorage.getItem(userArray));
function containsObject(newemail, userArray) {
newemail = document.getElementById("emailinput").value;
oldemail = localStorage.email;
if (newemail === oldemail) {
feedback.innerHTML = "email exist";
} else {
storeName();
}
}
function storeName(person, userArray) {
let newarray = JSON.parse(localStorage.getItem(userArray));
newarray.push(person);
userArray = newarray;
localStorage.setItem("person", JSON.stringify(userArray));
console.log(userArray);
}
Hi Mohammed when using the local storage you always must first initialize a value before altering it. Here an example : Initializing :
localStorage.setItem('user1', 'Mohammed');localStorage.getItem('user1')Or you can overwrite its value :
localStorage.setItem('user1','Jip')Important to know is that both the key and its assigned value must be strings. So when you want to store and initialize an array of users the array must be stored as a string. To repeat the process for your use case : Initializing :
localStorage.setItem('users',"[]")Reading :
localStorage.getItem('users')Altering its value :
let users = JSON.parse(localStorage.getItem('users'))
users.push('Jip')
users = JSON.stringify(users)
localStorage.setItem('users',users)I hope this is what you needed.