Hide or disable button inside modal upon modal launch using jQuery

When a particular button is clicked, an ajax request takes place and upon success, a modal is stored in a variable and then the modal is launched. There is a button inside the modal that I want by default to be hidden or disabled. I cannot seem to get that to happen.

	   $( '.outlet' ).on('click', function(e) {
		   e.preventDefault();
		   var prodName = $(this).data('prodname');
		   var prodId = $(this).data('id');
		   
		   $.ajax({
			   url: url + '/CartAjax/ajaxModal',
			   type: 'POST',
			   data: {prodId: prodId},
			   beforeSend: function() {
			   $( '.outlet' ).prop('disabled', true);
			   $( '.obtext' ).hide();
			   $( '#outletspinner' ).show();
			   
		   },
		   })
		   .done(function (data) {
			     var modal = `

					<div id="myModal" class="modal fade" role="dialog" data-backdrop="static" data-keyboard="false">
						<div class="modal-dialog">
							<div class="modal-content">
								<div class="modal-header">
									<button type="button" class="close" data-dismiss="modal">&times;</button>
									<h4 class="modal-title">${prodName} </h4>
								</div>
								<div class="modal-body">

								<div>
									<select class="form-control" id="branches">
										<option value="">Select Outlet</option>
										${data}
									</select>
	   							</div>

								</div>
								<div class="modal-footer">
									<button type="button" class="btn btn-default closeBranchModal">Close</button>
				                  <button class="btn btn-raised ripple-effect cart-btn closeBranchModal" id="addToCartNF2" data-id="${prodId}"><div class="spinner" style="display: none;"></div><span class="cartBtnTextNF">ADD TO CART</span></button>
								</div>
							</div>
						</div>
					</div>  
					`;
			    $(modal).modal('show');
			   $( '#addToCartNF2' ).hide();

			   	$( '#outletspinner' ).hide();
				$( '.obtext' ).show();
				$( '.outlet' ).prop('disabled', false);
		   })

		   		.fail(function (jqXHR, textStatus, errorThrown) {
				console.log(textStatus + ': ' + errorThrown);
				console.warn(jqXHR.responseText);
			});
	   })

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