max method

max( value )Returns: Boolean

Description: Makes the element require a given maximum.

Example:

Makes “field” required and 23 or smaller.

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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Makes "field" required and 23 or smaller.</title>
<link rel="stylesheet" href="http://jqueryvalidation.org/files/demo/site-demos.css">
</head>
<body>
<form id="myform">
<label for="field">Required, maximum value 23: </label>
<input type="text" class="left" id="field" name="field">
<br/>
<input type="submit" value="Validate!">
</form>
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script src="http://jqueryvalidation.org/files/dist/jquery.validate.min.js"></script>
<script src="http://jqueryvalidation.org/files/dist/additional-methods.min.js"></script>
<script>
// just for the demos, avoids form submit
jQuery.validator.setDefaults({
debug: true,
success: "valid"
});
$( "#myform" ).validate({
rules: {
field: {
required: true,
max: 23
}
}
});
</script>
</body>
</html>

Demo: