Answers for "modal backdrop javascript"

add backdrop to modal css

.custom-modal-backdrop {
  background-color: rgba(0,0,0,0.7);
}

<div class="modal fade custom-modal-backdrop" id="health_Modal" tabindex="-1" aria-labelledby="health_ModalLabel" aria-hidden="true">

bootstrap modal popup backdrop false

<button class='btn btn-danger fa fa-trash' data-toggle='modal' data-target='#deleteModal' data-backdrop='static' data-keyboard='false'></button>