HTML | DOM Storage setItem() Method
The setItem() method is used to set the storage object item which is specified by the user. This storage object can be a localStorage object or sessionStorage object.
Syntax:
For local storage:
localStorage.setItem(keyname, value)
For session storage:
sessionStorage.setItem(keyname, value)
Parameters: Two parameters are required :-
- Keyname: It specifies the name of the key used for getting the value.
- value: It specifies the value which replaces the old value.
Return Value: A String, representing the inserted value.
Example:
<!DOCTYPE html> <html> <head> <!--script for creating new local storage item and retrieve it --> <script> // Set item in local storage. function createItem() { localStorage.setItem("city", "Gwalior"); } function myFunction() { var x = localStorage.getItem("city"); document.getElementById("demo").innerHTML = x; } </script> </head> <body> <h1>Welcome to GeeksforGeeks</h1> <h3>The Storage setItem() Method</h3> <p>Click on button to create a local storage item </p> <button onclick="createItem()"> Create local storage item </button> <p>Click the button to get the item value:</p> <button onclick="myFunction()"> Get the item value </button> <p id="demo"></p> </body> </html> |
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Output:
Before:
After:
Supported Browsers: The browser supported by DOM setItem() Method are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
