Getting the value from the localStorage object key in Angular: a step-by-step guide

Question

Getting the value from the localStorage object key in Angular: a step-by-step guide

Looking for assistance here. Within the localStorage, I have an object as shown in the example below. My framework of choice is Angular, and I'm trying to retrieve the value associated with the first linkedinMail key. Despite my attempts using different approaches, the console output only shows the opening curly brace {

Object stored in localStorage:

{"linkedinMail": "mail.com", "password": "123"}

First approach:

public linkedinEmailBody: any

const emailLoginLinkedin = localStorage.getItem('credsForJetLeadBE')
let [key, value] = Object.entries(emailLoginLinkedin)[0];
this.linkedinEmailBody = value;
console.log(this.linkedinEmailBody) // result: `{`

Second approach:

public linkedinEmailBody: any

const emailLoginLinkedin = localStorage.getItem('credsForJetLeadBE')
const valueEmailLinkedin = Object.values(emailLoginLinkedin)[0];
this.linkedinEmailBody = valueEmailLinkedin
console.log(this.linkedinEmailBody) // result: `{`

Third approach:

public linkedinEmailBody: any

const emailLoginLinkedin = localStorage.getItem('credsForJetLeadBE')
const valueEmailLinkedin = emailLoginLinkedin[Object.keys(emailLoginLinkedin)[0]];
this.linkedinEmailBody = valueEmailLinkedin
console.log(this.linkedinEmailBody) // result: `{`

When employing standard JavaScript, I am able to retrieve the correct value for the linkedinMail field instead of just the opening brace {. What could be going wrong in my Angular implementation? Appreciate your help.

javascript angular typescript local

Answer 1

Answer №1

tag, it is important to note that LocalStorage and sessionStorage store strings by default. To convert these stored strings back to their original type, you will need to parse them using JSON.parse(). For example:

const emailLoginLinkedin = JSON.parse(localStorage.getItem('credsForJetLeadBE'));

Once parsed, you can then extract and utilize the first key-value pair in any desired manner.

Answer 2

tag, it is important to note that LocalStorage and sessionStorage store strings by default. To convert these stored strings back to their original type, you will need to parse them using JSON.parse(). For example:

const emailLoginLinkedin = JSON.parse(localStorage.getItem('credsForJetLeadBE'));

Once parsed, you can then extract and utilize the first key-value pair in any desired manner.

Answer 3

Answer №2

To retrieve the actual object from local storage, you must convert the stored value from a string using:

JSON.parse(localStorage.getItem('credsForJetLeadBE'))

This method will return the desired object.

Try this code snippet:

const emailLoginLinkedin = JSON.parse( // (1)
    localStorage.getItem("credsForJetLeadBE")
);

let [key, value] = Object.entries(emailLoginLinkedin)[0];
let linkedinEmailBody = value;
console.log(linkedinEmailBody);

The data in local storage is stored as a JSON string representing the object being saved.

Using JSON.parse(), JavaScript can interpret it as an object for manipulation.

Answer 4

To retrieve the actual object from local storage, you must convert the stored value from a string using:

JSON.parse(localStorage.getItem('credsForJetLeadBE'))

This method will return the desired object.

Try this code snippet:

const emailLoginLinkedin = JSON.parse( // (1)
    localStorage.getItem("credsForJetLeadBE")
);

let [key, value] = Object.entries(emailLoginLinkedin)[0];
let linkedinEmailBody = value;
console.log(linkedinEmailBody);

The data in local storage is stored as a JSON string representing the object being saved.

Using JSON.parse(), JavaScript can interpret it as an object for manipulation.

Answer 5

Answer №3

Let me provide you with a comprehensive example, as the issue could arise not only in the GET method but also in the SET method.

I prefer not to take the "easy way" approach so that you can grasp the concept better. Once everything is working smoothly, you can explore more complex options like destructuring.

// Initial Declaration
interface IEmailLoginLinkedin = {
   linkedinMail: string; 
   password: string;
}

emailLoginLinkedin: IEmailLoginLinkedin;

// Initialization
 this.emailLoginLinkedin =  { linkedinMail: 'example@mail.com',password: 'password123' };

// Set value
this.setEmailLoginLinkedin(this.emailLoginLinkedin);

// Get values
const emailLoginLinkedinObject: IEmailLoginLinkedin|null  = this.getEmailLoginLinkedin();

let linkedinMail: string;
let password: string;

if (emailLoginLinkedinObject) {

   linkedinMail= emailLoginLinkedinObject.linkedinMail;
   password = emailLoginLinkedinObject.password;

   // Alternatively, you can use 'destructuring':({linkedinMail, password}) = emailLoginLinkedinObject;

} else {
console.log('emailLoginLinkedin data is not available in the localStorage');
}

Here are the methods for accessing the localStorage:

 
// Serialize and STORE the emailLoginLinkedin in localstore:
setEmailLoginLinkedin(emailLoginLinkedin: IEmailLoginLinkedin){
   const emailLoginLinkedinString:string = JSON.stringify( emailLoginLinkedin );
   localStorage.setItem('emailLoginLinkedin', emailLoginLinkedlinString);
}

----
 
// READ the emailLoginLinkedin from localstorage and Deserialize
getEmailLoginLinkedin(): IEmailLoginLinkedin|null {
 
   const emailLoginLinkedinString:string|null =  localStorage.getItem('emailLoginLinkedin');
 
   if( emailLoginLinkedinString ){
       return JSON.parse(emailLoginLinkedinString);
   } else {
       return null;
   }
 
}

Answer 6

Let me provide you with a comprehensive example, as the issue could arise not only in the GET method but also in the SET method.

I prefer not to take the "easy way" approach so that you can grasp the concept better. Once everything is working smoothly, you can explore more complex options like destructuring.

// Initial Declaration
interface IEmailLoginLinkedin = {
   linkedinMail: string; 
   password: string;
}

emailLoginLinkedin: IEmailLoginLinkedin;

// Initialization
 this.emailLoginLinkedin =  { linkedinMail: 'example@mail.com',password: 'password123' };

// Set value
this.setEmailLoginLinkedin(this.emailLoginLinkedin);

// Get values
const emailLoginLinkedinObject: IEmailLoginLinkedin|null  = this.getEmailLoginLinkedin();

let linkedinMail: string;
let password: string;

if (emailLoginLinkedinObject) {

   linkedinMail= emailLoginLinkedinObject.linkedinMail;
   password = emailLoginLinkedinObject.password;

   // Alternatively, you can use 'destructuring':({linkedinMail, password}) = emailLoginLinkedinObject;

} else {
console.log('emailLoginLinkedin data is not available in the localStorage');
}

Here are the methods for accessing the localStorage:

 
// Serialize and STORE the emailLoginLinkedin in localstore:
setEmailLoginLinkedin(emailLoginLinkedin: IEmailLoginLinkedin){
   const emailLoginLinkedinString:string = JSON.stringify( emailLoginLinkedin );
   localStorage.setItem('emailLoginLinkedin', emailLoginLinkedlinString);
}

----
 
// READ the emailLoginLinkedin from localstorage and Deserialize
getEmailLoginLinkedin(): IEmailLoginLinkedin|null {
 
   const emailLoginLinkedinString:string|null =  localStorage.getItem('emailLoginLinkedin');
 
   if( emailLoginLinkedinString ){
       return JSON.parse(emailLoginLinkedinString);
   } else {
       return null;
   }
 
}

Getting the value from the localStorage object key in Angular: a step-by-step guide

Answer №1

Answer №2

Answer №3

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