HTML <input> stepAttribute

HTML input 标签参考手册HTML <input> Tag

Examples

An HTML form with an input field with a specified legal number interval:

<form action="demo-form.php"> <input type="number" name="points" step="3"> <input type="submit"> </form>

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Browser Support

The numbers in the table specify the first browser version that fully supports the attribute.

Attribute
step 6.0 10.0 16.0 5.0 10.6

Definition and Usage

The step attribute specifies the legal number intervals for an <input> element.

Example: if step="3", legal numbers should be -3, 0, 3, 6, etc.

Tip:The step attribute can be used together with themaxandminattribute to create a range of legal values.

Note:The step attribute applies to the following input types: number, range, date, datetime, datetime-local, month, time, and week.


Differences between HTML 4.01 and HTML5

The step attribute is a new attribute in HTML5.


Syntax

<input step="number">

Attribute Values

Value Description
number Specifies the legal number intervals for the input field.


HTML input 标签参考手册HTML <input> Tag Other extensions