<!DOCTYPE html>
<html>
<body style="display: flex;
flex-direction: column;
justify-content:center;
align-items:center;">
<div class="container"
style="position: relative;
text-align: center;">
<h1 style="color: rgb(18, 154, 18);">
GeeksforGeeks
</h1>
<h3> window open and close method</h3>
<button onclick="windowOpen()">
Open GeeksforGeeks
</button>
<button onclick="windowClose()">
Close GeeksforGeeks
</button>
</div>
<script>
let Window;
// Function that open the new Window
function windowOpen() {
Window = window.open(
"_blank", "width=400, height=300, top=230, left=540");
}
// function that Closes the open Window
function windowClose() {
Window.close();
}
</script>
</body>
</html>
