Head.js weird action
Question
I'm trying to use head.js. Getting some weird action. Below works but if I comment out "alert('hi')" in the script in the BODY, then the head.js doesn't seem to work.
So I tried commenting out all the head.js stuff and used a standard tag for each JS library. And it works as expected. But when using Head.js, it fails if the "alert('hi')" is commented out. Obviously, for production, I want to remove this alert but then I get this error message: "ReferenceError: $ is not defined" ... ??? But if I uncomment out the alert, then it all works and pulls data from the DB ???
Any thoughts?
<head>
<title></title>
<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/headjs/0.99/head.min.js">
</script>
<script type="text/javascript">
head.js(
/* root level */
"http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js",
"http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js",
"/assets/scripts/external/_references.js",
"../../assets/scripts/external/jquery.unobtrusive-ajax.min.js",
"../../assets/scripts/external/jquery.validate-vsdoc.js",
"../../assets/scripts/external/jquery.validate.min.js",
"../../assets/scripts/external/jquery.validate.unobtrusive.min.js",
"../../assets/scripts/external/knockout-2.3.0.js",
"../../assets/scripts/external/modernizr-2.6.2.js",
"/assets/css/Index.css",
"assets/css/OrangeCounty.css"
);
</script>
</head>
<body>
<div id="list"></div>
<script>
alert('hi');
$.getJSON("http://localhost/webapi/api/ccc", function (result) {
$.each(result, function (i, field) {
$("div").append(field.Code + " " + field.Country1 + "<br/>");
});
});
</script>
</body>
1 answers
solution1
1 ACCPTED 2013-09-09 01:16:53
The alert() stalls the script execution enough for jQuery to actually load. Head.js loads the scripts in parallel and doesn't block, so you have to use it with a callback:
head.js(..., function() {
// Your code
});
Or put that code into a separate script file and put it after jQuery in your head.js call.
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