require_from_group method

Returns: Boolean

Description: Ensures a given number of fields in a group are complete.

    In the options passed to the rule, supply the minimum number of fields
    within the group that must be complete and a selector to define the
    group. Then apply this rule to all the fields within the group.
    The form then cannot be submitted until at least the minimum number have
    been completed.

    Part of the additional-methods.js file

    Example:

    Within a group of three phone numbers, ensure at least one is complete.

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    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>Within a group of three phone numbers, ensure at least one is complete.</title>
    <link rel="stylesheet" href="https://jqueryvalidation.org/files/demo/site-demos.css">
    </head>
    <body>
    <form id="myform">
    <label for="mobile_phone">Mobile phone: </label>
    <input class="left phone-group" id="mobile_phone" name="mobile_phone">
    <br/>
    <label for="home_phone">Home phone: </label>
    <input class="left phone-group" id="home_phone" name="home_phone">
    <br/>
    <label for="work_phone">Work phone: </label>
    <input class="left phone-group" id="work_phone" name="work_phone">
    <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/1.15.0/jquery.validate.min.js"></script>
    <script src="https://cdn.jsdelivr.net/jquery.validation/1.15.0/additional-methods.min.js"></script>
    <script>
    // just for the demos, avoids form submit
    jQuery.validator.setDefaults({
    debug: true,
    success: "valid"
    });
    $( "#myform" ).validate({
    rules: {
    mobile_phone: {
    require_from_group: [1, ".phone-group"]
    },
    home_phone: {
    require_from_group: [1, ".phone-group"]
    },
    work_phone: {
    require_from_group: [1, ".phone-group"]
    }
    }
    });
    </script>
    </body>
    </html>

    Demo: