Data loading json format

below you describe the initial data loading
what is the json format that the component will parse?
Also do you still do dynamic grid creation? I used ver3 and specified the grid layout, clumsy but workable, and parsed my own json from a hidden form. of course the above supplants that, but where is that more detailed. ty.

The json format is described at the same page:
Unfortunately there is no similar initialization form of the dhtmlxGrid as in the ver3, but you are still able to parse the config object for your grid from the external json string/file. Like:

var config={
    columns: [// columns config],
    data: dataset
var grid = new dhx.Grid("grid_container",config );