json javascript

I have put together a little JSON sample that iterates over a JavaScript object and posts the property values to a cross domain server that is hosts by a DotNet.aspx page that then converts a C# object to a JSON string that is then posted back to the browser and converted back to a JavaScript object without having to use Window.Eval()

The resultant JavaScript object is then finally past back to a call-back function that is ready to uses and the code does not need 3rd party libraries, works in net framework 2.0 and upwards and has been tested with IE6-IE9, Firefox plus it's lightweight.

The code also show an example of using document.createElement('div');

Click my name or see http://www.flashinvader.com/developers_corner/simple_json_objects_using_javascript_and_aspx.html for full details

In your code, you are declaring a global myJSONObject and then declaring a function argument also called myJSONObject.

The global one would be accessible from within the function except that you are masking it with the one in the argument list. You then call send without passing in any object. The result being that the myJSONObject accessible inside the function, i.e. the one from the argument list, is null.

You could either remove the argument from send and just use the global myJSONObject, or you have to ensure you pass it when you call send, i.e. send(myJSONObject);.

You need to either use the globally defined object or pass the object along with the function:

Either:

function send(){
    var c = document.createElement('div');
    var t = document.createTextNode(myJSONObject.bindings[1].regex);
    c.appendChild(t);
    document.body.appendChild(c);
}

with

<input type="button" value="go" onclick="send();" />

OR

function send(myJSONObject){
    var c = document.createElement('div');
    var t = document.createTextNode(myJSONObject.bindings[1].regex);
    c.appendChild(t);
    document.body.appendChild(c);
}

with

<input type="button" value="go" onclick="send(myJSONObject);" />