<!DOCTYPE html>
<html>
<body>
Year and Week: <input type="week" id="myWeek" name="year_week">
<p>Click the buttons to display and/or change the value of the name attribute of the week field.</p>
<button onclick="display()">Display name</button>
<button onclick="change()">Change name</button>
<p><strong>Note:</strong> input elements with type="week" are not supported in Internet Explorer or Firefox.</p>
<script>
function display() {
var x = document.getElementById("myWeek").name;
alert("The name of the week field is: " + x);
}
function change() {
var x = document.getElementById("myWeek").name = "newWeekName";
alert ("The name was changed to: " + x);
}
</script>
</body>
</html>