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addRequiredGroup

Makes the new fields group required. It could be a group of checkboxes or radio buttons. It means that at least one input in the group should be checked/selected.

The method return a JustValidate instance, so it could be used as a chain (like .addRequiredGroup().addRequiredGroup()...).

The method takes 3 arguments:

addRequiredGroup(groupField, errorMessage, config);

where:

groupField - a string selector or DOM element of the fields group

errorMessage - a custom error message

config - some specific settings applied to this particular group (the same as described here).

Example​

const validation = new JustValidate('#form');

validation.addRequiredGroup('#radio-group', 'Select at lease one option!', {
  successMessage: 'Everything looks good',
});

or

const validation = new JustValidate('#form');

validation.addRequiredGroup(document.querySelector('#radio-group'));