JSFiddle - React, Tailwind, and code Playground

HTML

<div class="row">
    <div class="col-xs-6">
        <input type="text" name="CACLastName" ng-model="cac.lastName" placeholder="NOM" ng-required="true" ng-disabled="$parent.isDisabled" class="form-control"/>
    </div>
    <div class="col-xs-6">
        <input type="text" name="CACirstName" ng-model="cac.firstName" placeholder="Prénom" ng-required="true" ng-disabled="$parent.isDisabled" class="form-control"/>
    </div>
</div>

JavaScript

var form_inputs = document.getElementsByClassName('form-control')

for ( var i = 0; i < form_inputs.length; i ++ ) {

	if ( form_inputs[i].hasAttribute('ng-required') ) {
  
  	form_inputs[i].insertAdjacentHTML('afterend', '*');
  
  }
	

}