Javascript Browser Storage setItem() Method

Introduction

Set the value of the specified local storage item: 

localStorage.setItem("mytime", Date.now());

This example demonstrates how to use the setItem() method to set the value of a specified local storage item.

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<!DOCTYPE html>
<html>
<body>
<button onclick="createItem()">Set local storage item</button>
<button onclick="readValue()">Get the item value</button>
<p id="demo"></p>
<script>

function createItem() {//from w w  w  .  ja  va  2s  .c o m
  localStorage.setItem("mytime", Date.now());
}

function readValue() {
  var x = localStorage.getItem("mytime");
  document.getElementById("demo").innerHTML = x;
}

</script>
</body>
</html>

The setItem() method sets the value of the specified Storage Object item.

The setItem() method belongs to the Storage Object, which can be either a localStorage object or a sessionStorrage object. 

setItem(keyname, value);

Parameter Values

Parameter Description
keyname Required. A String specifying the name of the key to set the value of
value Required. A String specifying the value of the key to set the value of

The setItem() method returns a String representing the inserted value.




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