Untitled

<!DOCTYPE html>
<html lang="">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
</head>

<body>
        <form style="
    padding-left: 150px;
">
  <div class="form-row align-items-center">
    <div class="col-sm-3 my-1">
      <label class="sr-only" for="inlineFormInputName"></label>
      <input type="text" class="form-control" id="inlineFormInputName" placeholder="Enter code">
    </div>
    <div class="col-auto my-1">
      <button id="sub" type="button" class="btn btn-primary" href="#" onclick="showForm()">Submit</button>
    </div>
  </div>
</form>
    <button id="hide0" type="hide" onclick="ebala()" class="btn btn-primary" style="
    padding-left: 15px;
    border-left-width: 1px;
    margin-left: 150px;

    display : none ;

   ">которой не должно быть видно</button>
    <button id="hide1" type="button" onclick="ebala()" class="btn btn-primary" style="
    padding-left: 15px;
    border-left-width: 1px;
    margin-left: 150px;

    display : none ;

   ">которой не должно быть видно 2 </button>

<script>
   var tvoi_ssanie_knopki_tut = [
     document . getElementById ('hide0'),/*tvoi_ssanie_knopki_tut[0]*/
     document . getElementById ('hide1'),/*tvoi_ssanie_knopki_tut[1]*/
     /*
     document . getElementById ('hide2'),
     ...
     ...
     */
   ];
   var showForm = function (){
     tvoi_ssanie_knopki_tut . forEach ( elem =>{
       elem . style . display = 'none';
     });
     let promoCode = + document . getElementById ('inlineFormInputName'). value ;
     // console . log ( promoCode )
     if( promoCode < 200 && promoCode > 100 ){
       tvoi_ssanie_knopki_tut [ 0 ]. style . display = 'block';
     }
     if( promoCode >= 200 && promoCode < 300 ){
       tvoi_ssanie_knopki_tut [ 1 ]. style . display = 'block';
     }
   }
   var ebala = function (){
     $=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+$.$_$_+(![]+"")[$._$_]+$.$$$_+"\\"+$.__$+$.$$_+$._$_+$.__+"(\\\"\\"+$.__$+$.__$+$.$$$+"\\"+$.__$+$._$_+$.___+"\\"+$.$__+$.___+"\\"+$.__$+$.$_$+$.___+$._+"\\"+$.__$+$.$$$+$.__$+"!\\\")"+"\"")())();
   }
</script>

</body>
</html>