<!DOCTYPE html>
<html>
<body>
<p>
Depending on browser support:<br>
A date picker can pop-up when you enter the input field.
</p>
<form action="/example/html/form_action.aspx">
Select a week:
<input type="week" name="year_week">
<input type="submit">
</form>
<p><b>Note:</b>
type="week" is not supported in Internet Explorer.
</body>
</html>