What is HTML | DOM Storage Event?

In this article, we will learn HTML | DOM Storage Event,This free HTML tutorial for complete beginners will help you learn HTML from scratch.

HTML | DOM Storage Event

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The Storage Event in HTML DOM is used to make change in the storage area in the context of another document. When there is modification in the storage area of the window, a storage event is sent to that window.

Syntax:

window.addEventListener("storage", script)

Example:

html

<!DOCTYPE html>
<html>
 
<head>
    <title>
        HTML DOM storage Event
    </title>
</head>
 
<body>
     
    <h1>w3wiki</h1>
     
    <h2>HTML DOM storage Event</h2>
     
    <button onclick = "myBeginner()">
        Click here!
    </button>
     
    <p id = "cont"></p>
     
    <!-- script of DOM storage event -->
    <script>
        window.addEventListener("storage", myBeginner1);
         
        function myBeginner1(event) {
            document.getElementById("cont").innerHTML
                    = "A Computer Science Portal";
        }
         
        function myBeginner() {
            var x = window.open("", "win", 
                    "width = 100, height = 100");
                     
            x.localStorage.setItem("mytime", Date.now());
            x.close();
        }
    </script>
</body>
 
</html>                                