Software Engineering

Advanced State Management and Persistence

Add data persistence and advanced state operations to your Kanban board. Learn to save state to localStorage with $effect, implement task deletion with confirmation, handle async operations, and add robust form validation—building apps that gracefully handle errors and edge cases.

CSS

HTML

JavaScript

Svelte

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5 lessons

20 practices

3 hours

Course details

Refactoring the Task Store for Scalability in Svelte

Preview

Adding Timestamps to Task Objects

Adding Timestamps to New Tasks

Tracking Task Updates with Timestamps

Implementing Task Deletion and Derived States

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Senior Machine Learning Engineer

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I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Advanced State Management and Persistence

Course details

Unit 14 practices32 min

Unit 24 practices32 min

Unit 33 practices26 min

Unit 44 practices32 min

Unit 55 practices38 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community