Not that I'm aware of without parsing the table element using the DOM 
walking functions.  Something like this might do it:

function tableToJSON(tableID) {
    var tableData = $A();
    var rows = $$("#"+tableID+" tr).each(function(row) {
       var cellData = $H(row.descendants().pluck("innerHTML"));
       tableData.push(cellData);
    });

    return tableData.toJSON();
}

But I've not tried it, nor am I sure that will work.
 
 - Dash -
phil swenson wrote:
> Is there a way to retrieve an HTML table in javascript and convert it
> to JSON using prototype?
>
> I'm stumped :(
>
> phil
>
>
> >
>
>   

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