Storage.length
The length
read-only property of the
Storage
interface returns the number of data items stored in a given
Storage
object.
Syntax
length = storage.length;
Return value
The number of items stored in the Storage
object.
Example
The following function adds three data items to the local storage for the current domain, then returns the number of items in the storage:
function populateStorage() {
localStorage.setItem('bgcolor', 'yellow');
localStorage.setItem('font', 'Helvetica');
localStorage.setItem('image', 'cats.png');
return localStorage.length; // Should return 3
}
Note: For a real world example, see our Web Storage Demo.
Specifications
Specification |
---|
HTML Standard # dom-storage-length-dev |
Browser compatibility
BCD tables only load in the browser