HTML5 - Kiểu nhập week

Kiểu nhập week

<!DOCTYPE html>
<html lang="en">
<head>
<title>HTML5 Week Input Type</title>
<script>
    function getValue() {
        var week = document.getElementById("myweek").value;
        alert(week);
    }
</script>
</head>
<body>
    <form>
        <label for="myweek">Select Week:</label>
        <input type="week" id="myweek">
        <button type="button" onclick="getValue();">Get Value</button>
    </form>
</body>
</html>

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