html open and close code example

Example 1: javascript close window

<!DOCTYPE html>
<html>
<body>

<button onclick="openWin()">Open "myWindow"</button>
<button onclick="closeWin()">Close "myWindow"</button>

<script>
var myWindow;

function openWin() {
  myWindow = window.open("", "myWindow", "width=200,height=100");
  myWindow.document.write("<p>This is 'myWindow'</p>");
}

function closeWin() {
  myWindow.close();
}
</script>

</body>
</html>

Example 2: how to enter through a button that is closed in a html code

<button type="button" 
        onclick="window.open('', '_self', ''); window.close();">Discard</button>

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