Detect System Theme Desire Change Utilizing JavaScript

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JavaScript and CSS permit customers to detect the consumer theme desire with CSS’ prefers-color-scheme media question. It is commonplace as of late to make use of that desire to indicate the darkish or mild theme on a given web site. However what if the consumer modifications their desire whereas utilizing your app?

To detect a system theme desire change utilizing JavaScript, you might want to mix matchMedia, prefers-color-scheme, and an occasion listener:

window.matchMedia('(prefers-color-scheme: darkish)')
      .addEventListener('change',({ matches }) => {
  if (matches) {
    console.log("change to darkish mode!")
  } else {
    console.log("change to mild mode!")
  }
})

The change occasion of the matchMedia API notifies you when the system desire modifications. You should use this occasion to mechanically replace the location’s show in actual time.

I like that this API permits detecting consumer desire on a system stage. Catering to consumer wants is a crucial a part of creating a terrific internet expertise!

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