Parsley plugin initialization with tweaks to style Parsley for Bootstrap 4

parsleyConfig.js

 // Parsley plugin initialization with tweaks to style Parsley for Bootstrap 4
 $("#my-form").parsley({
   errorClass: 'is-invalid text-danger',
   successClass: 'is-valid', // Comment this option if you don't want the field to become green when valid. Recommended in Google material design to prevent too many hints for user experience. Only report when a field is wrong.
   errorsWrapper: '<span class="form-text text-danger"></span>',
   errorTemplate: '<span></span>',
   trigger: 'change'
 }) /* If you want to validate fields right after page loading, just add this here : .validate()*/ ;
 
 // Parsley full doc is avalailable here : https://github.com/guillaumepotier/Parsley.js/