HTML attribute: max
The max
attribute defines the maximum value that is acceptable and valid for the input containing the attribute. If the value
of the element is greater than this, the element fails validation. This value must be greater than or equal to the value of the min
attribute. If the max
attribute is present but is not specified or is invalid, no max
value is applied. If the max
attribute is valid and a non-empty value is greater than the maximum allowed by the max
attribute, constraint validation will prevent form submission.
Valid for the numeric input types, including the date, month, week, time, datetime-local, number and range types, and both the <progress>
and <meter>
elements, the max
attribute is a number that specifies the most positive value a form control to be considered valid.
If the value exceeds the max value allowed, the validityState.rangeOverflow
will be true, and the control will be matched by the :out-of-range
and :invalid
pseudo-classes.
Syntax
Input type | Syntax | Example |
---|---|---|
date | yyyy-mm-dd |
<input type="date" max="2019-12-25" step="1"> |
month | yyyy-mm |
<input type="month" max="2019-12" step="12"> |
week | yyyy-W## |
<input type="week" max="2019-W23" step=""> |
time | hh:mm |
<input type="time" max="17:00" step="900"> |
datetime-local | yyyy-mm-ddThh:mm |
<input type="datetime-local" max="2019-12-25T23:59"> |
number | <number> | <input type="number" min="0" step="5" max="100"> |
range | <number> | <input type="range" min="60" step="5" max="100"> |
Note: When the data entered by the user doesn't adhere to the maximum value set, the value is considered invalid in constraint validation and will match the :invalid
and :out-of-range
pseudo-classes.
See Client-side validation and rangeOverflow
for more information.
For the <progress>
element, the max
attribute describes how much work the task indicated by the progress
element requires. If present, must have a value greater than zero and be a valid floating point number. For the <meter>
element, the max
attribute defines the upper numeric bound of the measured range. This must be greater than the minimum value (min
attribute), if specified. In both cases, if omitted, the value defaults to 1.
Input type | Syntax | Example |
---|---|---|
<progress> |
<number> | <progress id="file" max="100" value="70"> 70%
</progress> |
<meter> |
<number> | <meter id="fuel" min="0" max="100" low="33" high="66"
optimum="80" value="40"> at 40/100</meter> |
Accessibility concerns
Provide instructions to help users understand how to complete the form and use individual form controls. Indicate any required and optional input, data formats, and other relevant information. When using the max
attribute, ensure this maximum requirement is understood by the user. Providing instructions within the <label>
may be sufficient. If providing instructions outside of labels, which allows more flexible positioning and design, consider using aria-labelledby
or aria-describedby
.
Specifications
Specification |
---|
HTML Standard # the-min-and-max-attributes |
HTML Standard # attr-meter-max |
HTML Standard # attr-progress-max |
Browser compatibility
html.elements.input.max
BCD tables only load in the browser
html.elements.meter.max
BCD tables only load in the browser
html.elements.progress.max
BCD tables only load in the browser
See also
step
min
- other meter attributes:
low
,high
,optimum
- Constraint validation
- Form validation
validityState.rangeOverflow
:out-of-range
<input>
- date, month, week, time, datetime-local, number and range types, and the
<meter>