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<html><body>Month: <input type="month" id="myMonth"><p>Click the button to change the value of the step attribute of the month field.</p><p><b>Tip:</b> Open the calendar on the right side of the month field before and after you click the button, to see the effect.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { document.getElementById("myMonth").step = "2"; document.getElementById("demo").innerHTML = "Step was set to '2', meaning that the user can only select every second month in the calendar.";}</script></body></html>