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Loading JSON into JavaScript variable locally without server-side script?

I have 41 JSON objects, each with the same scheme.

These objects are fairly large, and so I would like to load the object conditionally into a JavaScript script, when selecting an from a :

$('#myPicker').change(function() {
    alert('Value change to ' + $(this).attr('value'));
    $('#container').empty();
    init();
});

The function init() draws stuff in div called container.

When I change myPicker, I want init() to behave like init(value), which in turn tells init to load one of 41 JSON objects from a file (based on value).

Is loading a chunk of JSON from a file (located on the server-side) doable in this case, or do I need to use a server-side script handling Ajax form submissions and responses, etc.?

EDIT

I wrote the following code:

<script language="javascript" type="text/javascript">

     $(document).ready(function(){
        $('#cellTypePicker').change(function() {
            alert('Value change to ' + $(this).attr('value'));
            $('#container').empty();
            initFromPicker($(this).attr('value'));
        });
     });

     function initFromPicker(name) {
        // pick default cell type from picker, if name is undefined
        if (typeof name === "undefined")
            name = 'AG10803-DS12374';
        var jsonUrl = "file://foo/bar/results/json/" + name + ".json";
        alert(jsonUrl);
        $.ajax({
            url: jsonUrl,
            dataType: 'json',
            success: function(response){
                alert("Success!");
            },
            error: function(xhr, textStatus, errorThrown){
                alert("Error: " + textStatus + " | " + errorThrown + " | " + xhr);
            }
        });
        init(); // refills container...
     }
</script>

<body onload="initFromPicker();">
...

The line alert("Success!"); never gets called.

Instead, I get the following error:

Error: error | Error: NETWORK_ERR: XMLHttpRequest Exception 101 | [object Object]

I am checking the value jsonUrl and it appears to be a proper URL. The file that it points to is present and I have permissions to access it (it is sitting in my home folder). Может быть, я чего-то не понимаю?

0
задан Alex Reynolds 18 February 2012 в 02:28
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