digits method

Returns: Boolean

Description: Makes the element require digits only.

    Returns true if the value contains only digits.

    Works with text inputs.

    Example:

    Makes "field" required and digits only.

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    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>Makes "field" required and digits only.</title>
    <link rel="stylesheet" href="https://jqueryvalidation.org/files/demo/site-demos.css">
    </head>
    <body>
    <form id="myform">
    <label for="field">Required, digits: </label>
    <input class="left" id="field" name="field">
    <br/>
    <input type="submit" value="Validate!">
    </form>
    <script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
    <script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/jquery.validate.min.js"></script>
    <script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/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,
    digits: true
    }
    }
    });
    </script>
    </body>
    </html>

    Demo: