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javascript - How include an external JS file in a JSP page

I have an spring mvc app where in my main page, I need use an javascript file. I try include the file this way:

<script type="text/javascript" src="js/index.js"></script>

but when I running the application, the system behavior seems like no script is running. T also try this:

<script type="text/javascript" src="<c:url value='js/index.js'/>"></script>

but the result was the same. Someone have any idea why this is happening?

ps.: the entire code of my page is:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <title>HorarioLivre</title>

  <script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
  <script type="text/javascript" src="js/index.js"></script>

  <link rel="stylesheet" href="css/style-main.css">
  <link rel="stylesheet" href="css/style-popup.css">
</head>
<body>
  <header>
    <div class="container">
      <h1><a href="#">HorarioLivre</a></h1>
      <nav>
        <ul>
          <li><a href="listagem_evento.html" class="icon evento">Eventos</a></li>
          <li><a href="cadastra_horario.html" class="icon horario">Cadastrar Horarios</a></li>
          <li><a href="listagem_horario.html" class="icon horario">Listar Horarios</a></li>
          <li><a href="listagem_usuario.html" class="icon usuario">Usuarios</a></li>
          <li><a href="#">${usuario.nome}</a>
            <ul>
                <li><a href="usuario_perfil.html" class="icon perfil">Perfil</a></li>
                <li><a href="usuario_config.html" class="icon settings">Configura&ccedil;&otilde;es</a></li>
                <li><a href="usuario_logoff.html" class="icon logout">Sair</a></li>
            </ul>
          </li>
        </ul>
      </nav>
    </div>
  </header>
  <div id="results">
        <a href="#" id="close">Fechar</a>
        <div id="content"></div> 
  </div>
</body>
</html>

The script should open my subpages in a pop-up windows, but they are being opened in the browser window.

** UPDATE 1 **

My index.js is:

$(document).ready(function(){
   setupPopup();
});

function setupPopup() {
   $('a').click(function() {
       $('#content').load($(this).attr('href'));
      $('#container').append('<div id="cover">');
      $('#results').fadeIn(500);
      popupPosition();
   });

   $('#close').click(function() {
      $('#results').fadeOut(100);
      $('#cover').remove();
   });

   $(window).bind('resize', popupPosition);
}

function popupPosition() {
   if(!$("#results").is(':visible')){ return; }

   $("#results").css({
      left: ($(window).width() - $('#results').width()) / 2,
      top: ($(window).width() - $('#results').width()) / 7,
      position:'absolute'
   });

   $('#results').draggable();
}
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1 Answer

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but when I running the application, the system behavior seems like no script is running.

This is because the browser is unable to load the javascript 'index.js' from the specified location. If you open the browser console and go to the 'networks' tab, you will see 404 (resource not found) against it. You cannot specify a relative URL to a JavaScript in a JSP file that way.

You need to provide your folder structure (where index.js is located in your project) and how you have configured web.xml. But if you try the following, it will surely work:

<script type="text/javascript" src="${pageContext.request.contextPath}/js/index.js"></script>

And then keep the 'js' folder containing 'index.js' at the same level as 'WEB-INF'.


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