How to save and manage dark mode preferences in Mediumish
Table of contents Why store theme preferences Understanding localStorage basics Detecting system color scheme preference Saving user theme choice Applying saved preference on page load Syncing with system preference changes FAQ Why store theme preferences Without storing user preferences, your site will always revert to the default theme on each visit. This means a dark mode user will need to switch every time, which is inconvenient and lowers the overall user experience. By saving preferences, you ensure users get the same theme they chose last time, creating a sense of personalization and consistency across sessions. Understanding localStorage basics localStorage is a built-in web API that allows you to store small amounts of data directly in the user's browser. It persists even after the browser is closed, making it perfect for saving theme preferences. Key characteristics of localStorage: Stores key-value pairs as s...