mardi 21 juin 2016

Javascript Function works inside HTML page but doesn't work from external .js file

I am trying to place some Javascript code inside a .js file so that I can call it from multiple HTML pages. The problem is, my Javascript code works fine if I place it in a script within the HTML page, but when placed in a external .js file, it simply does not work. I've looked at these questions quite a few times and still cannot find the error.

Here's the HTML page:

<html>
<head>
    <meta charset="utf-8" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="msapplication-tap-highlight" content="no" />
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
    <link rel="stylesheet" type="text/css" href="css/global.css" />
    <link rel="stylesheet" type="text/css" href="css/contacts.css" />
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" src="js/index.js"></script>
    <script type="text/javascript" src ="js/contactsModule.js"></script>
    <title>Hall of Heroes</title>
</head>
<body onload = "contactsModule.getContacts();">



    <!-- Global Header Starts Here -->
    <div class="header">
        <div class="cancel">
            <img src="img/cancel.png" /><!-- if screen is triggered from onboarding, then go back to onboarding screen instead of home -->
        </div>
        <h1>My Contacts</h1>
    </div>

    <div class="wrapper">
        <h3>A</h3> <!-- letter header goes here -->

        <!-- Begin Contact Unit -->
        <div class="feed">

        </div>
        <!-- End Contact Unit -->

    </div>

   </body>

   </html>

And here is the .js file:

var contactsModule = (function($){

        function getContacts()
        {
            dbContacts();
        }

        function displayContacts(contactArray){
            window.alert('displayContacts now running!');
            var jsonObject = $.parseJSON(contactArray);
            jsonObject.forEach(function (dat) {
                //Begin Contact Unit
                $('.feed')
                    .append('<div class="feed-img"><img src="' + dat.avatarUrl + '"/>
                    </div><div class="feed-text"><p><span class="name_highlight">
                    ' + dat.firstName + ' ' + dat.lastName + '</span></p></div>');
                //End Contact Unit
            });
        }
        function dbContacts() {
            var avatarUrl;
            var firstName;
            var lastName;

            $.ajax({
                type: "GET",
                url: "http://www.hallofheroesapp.com/php/contacts.php",
                data: {avatarUrl: avatarUrl, firstName: firstName, lastName: lastName},
                success: function (response) {
                    window.alert('AJAX ran successfully!');
                    displayContacts(response);
                },
                error: function(response){
                    alert("Error:" + response);
                }
            });
        }
 }(jQuery));

Thank you for your help!

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