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Asked: 2026-05-12T18:57:03+00:00

I am writing some code to educate myself in the ways of ExtJS. I

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I am writing some code to educate myself in the ways of ExtJS. I am also new to JSON so hopefully this question will be easy for you to answer. I am trying to retrieve some data from a basic web service that I have written which should be returning its results as JSON (seeing as I am new to JSON – it could be that that is broken).

The error I am getting is

SyntaxError: missing ) in
parenthetical

The JSON that I am returning from my web service is

{
    "rows": [ 
    { 
        "id": "100000", 
        "genre_name": "Action", 
        "sort_order": "100000" 
    }, { 
        "id": "100002", 
        "genre_name": "Comedy", 
        "sort_order": "100002" 
    }, { 
        "id": "100001", 
        "genre_name": "Drama", 
        "sort_order": "100001" 
    }]
}

My ExtJS code is as below. The loadexception callback is where I have retrieved the JSON and error above from

var genres = new Ext.data.Store({
    proxy: new Ext.data.HttpProxy({
        method: 'POST',
        url: 'http://localhost/extjs_training/Demo_WebService/Utility.asmx/GetGenres',
        failure: function(response, options){
            Ext.get('my_id').dom.innerHTML = 'Load failed: ' + response.status;
        }
    }),
    reader: new Ext.data.JsonReader({
        fields: ['id', 'genre_name'],
        root: 'rows'
    }),
    listeners: {
        loadexception: function (proxy, options, response, e) {
            var result = response.responseText;
            Ext.MessageBox.alert('Load failure', e + " ..... " + result);
        }
    }
});

var loadSuccess = genres.load({
    callback: function(r, options, success){
        Ext.get('my_id').dom.innerHTML = 'Load status: success=' + success;
    }
});
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1 Answer

  1. Editorial Team

    Is the JSON you included above what is actually being returned from the call, or what you are anticipating it should look like? The string you included looks clean, but it looks like you formatted it as well. I’m not sure if the space after “id”: is allowed, either. It might not be a big deal, though.

    The missing parenthetical typically indicates that something in the JSON is wrong. It could be an extra character before/after the string. Use Firebug to examine what you are getting back, and make sure it is clear of any extra characters.

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