JSFiddle - React, Tailwind, and code Playground

HTML

<div id="appendClass1" class="clearfix">
                             <div class="col-md-4">
                             	<div class="form-group">
                                    <label>Name</label>
                                    <input type="text" class="form-control" placeholder="Enter your file name" name="file_name[]">
                                </div>
                                </div>
                            <div class="col-md-8">
                                <div class="form-group">
                                    <label>Choose file</label>
                                    <input name="file_img[]" type="file" style="margin-top: 8px;">
                                </div>
                                </div>
                             </div>
                                 <button type="button" id="getCount" class="pull-right btn btn-primary btn-xs"  onclick="addFloorPlan(1);">Add another</button>

JavaScript

function addFloorPlan(ant){
		//var count = 
		$('#appendClass'+ant+'').after('<div id="appendClass'+ant+'" class="clearfix"><div class="col-md-4"><div class="form-group"><label>Name</label><input type="text" class="form-control" placeholder="Enter your file name" name="file_name'+ant+'[]"></div></div><div class="col-md-8"><div class="form-group"><label>Choose file</label><input name="file_img'+ant+'[]" type="file" style="margin-top: 8px;"><span class="glyphicon glyphicon-remove removeCss" aria-hidden="true" onclick="removeFloorPlan('+ant+');"></span></div></div></div>');
		var cnt = ant+1;
		document.getElementById('getCount').outerHTML.replace('addFloorPlan('+ant+')', 'addFloorPlan('+cnt+')');
    		alert(document.getElementById('getCount').outerHTML.replace('addFloorPlan('+ant+')', 'addFloorPlan('+cnt+')'));

	}