第一次只有我想显示引导模态

Here i want to do when ever user comes to first time in my page i want to display modal in this page ,suppose user want for second page and again come page to first page also that modal should not show, i tried lot but i am unable to get answer, any help me

$(document).ready(function() {
    var isshow = localStorage.getItem('isshow');
    if (isshow== null) {
        localStorage.setItem('isshow', 1);

        // Show popup here
        $('#myModal').modal('show');
    }
    else{
    alert('else part');
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

<html>
<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h1>My First Bootstrap Page</h1>
 <!--<button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">Open Modal</button>-->

<!-- Modal -->
<div id="myModal" class="modal fade" role="dialog">
  <div class="modal-dialog">

    <!-- Modal content-->
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal">&times;</button>
        <h4 class="modal-title">Modal Header</h4>
      </div>
      <div class="modal-body">
        <p>Some text in the modal.</p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
      </div>
    </div>

  </div>
</div>
</div>

</body>
</html>

</div>

Please check this fiddle link. Fiddle Link your code is working fine and its good to use localstorage.

$(document).ready(function() {
    var isshow = localStorage.getItem('isshow');
    if (isshow === null) {
        localStorage.setItem('isshow', 1);
        // Show popup here
        $('#myModal').modal('show');
    } else {
      alert('else part');
    }
});