JSFiddle - React, Tailwind, and code Playground

HTML

<div id="arrData">
</div>


<button onclick="show();">Show it</button>

JavaScript

var rate_room = new Array();
add_RR(rate_room,33,6);
add_RR(rate_room,33,10);
add_RR(rate_room,33,6);


   
function show()
{
$.each(rate_room, function(i, val) {
      $("#arrData").append(i + " : " + val['rate']  + val['room'] + "<br/>");
    });
    
    alert('test');
}

function add_RR(ar,rate,room)
{
    var exists = false;
    $.each(rate_room, function(i, val) {
      if(val['rate'] == rate && val['room']== room) exists=true;
    });
   
   if(exists!==true)
   {
       ar.push({
            'rate':rate,
            'room':room
            }); 
    }
}

function remove_RR(ar,rate,room)
{
    $.each(rate_room, function(i, val) {
      if(val['rate'] == rate && val['room']== room) 
      {
         
           ar.splice(i,1);
      }
    });
   show();
}

      }
    });
   
}