Storage: length property - Web APIs | MDN
Value
The number of items stored in the Storage object.
Examples
The following function adds three data items to the local storage for the current domain, then returns the number of items in the storage:
js
function populateStorage() {
localStorage.setItem("bgcolor", "yellow");
localStorage.setItem("font", "Helvetica");
localStorage.setItem("image", "cats.png");
return localStorage.length; // Should return 3
}
Specifications
| Specification |
|---|
| HTML # dom-storage-length-dev |