How Can I Determine if a Storage Item Exists in localStorage?

Checking Existence of Storage Items

When working with localStorage, it's often necessary to determine if an item exists or not. The code snippet provided attempts to check this condition using truthy and falsy values, but there's a more straightforward approach available.

Using getItem

The getItem method in the WebStorage specification conveniently returns null if the item is not found. This means you can simply check:

if (localStorage.getItem("infiniteScrollEnabled") === null) {
  // Item doesn't exist
}

This approach is clear, concise, and the preferred method for checking item existence.

Related Reference:

• [Storing Objects in HTML5 localStorage](https://stackoverflow.com/questions/1623985/storing-objects-in-html5-localstorage)

The above is the detailed content of How Can I Determine if a Storage Item Exists in localStorage?. For more information, please follow other related articles on the PHP Chinese website!