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The input step attribute specifies the legal number intervals for an input field.
Example: if step="3", legal numbers could be -3, 0, 3, 6, etc.
Tip: This attribute can be used together with the max and min attributes to create a range of legal values.
The step attribute works with the following input types: number, range, date, datetime-local, month, time and week.
<!DOCTYPE html>
<html>
<body>
<h1>The input step attribute</h1>
<p>The step attribute specifies the legal number intervals for an input element.</p>
<form action="/php/inputStep.php" method="get">
<label for="points">Points:</label>
<input type="number" id="points" name="points" step="3">
<input type="submit" value="Submit">
</form>
</body>
</html>
