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AEM Touch UI validation
var $input = $('.my-input-field'),
errorMessege = 'This field is required';
if ($input.willValidate()) {
$input.checkValidity(); // true
$input.validationMessage(); // ''
/* Set input field as invalid */
$input.setCustomValidity(errorMessage);
$input.checkValidity(); // false
$input.validationMessage(); // 'This field is required'
$input.updateErrorUI(); // displays red error icon
/* Set input field as valid */
$input.setCustomValidity(null);
$input.checkValidity(); // true
$input.validationMessage(); // ''
$input.updateErrorUI(); // removes red error icon
}
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