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ブラウザのタブに時計を表示

HTML
JavaScript

Posted at 2018-07-19

tab-clock.html

<!DOCTYPE html>
<html>
    <head>
        <title>tab clock</title>
    </head>
    <body>
        <script>
            const element = document.getElementsByTagName("title")[0];
            setInterval(function() {
                element.innerHTML = (new Date()).toLocaleString();
            }, 250);
        </script>
    </body>
</html>

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