JSFiddle - React, Tailwind, and code Playground

JavaScript

var jsonStr = ["{\"r1\":768,\"r2\":1,\"r3\":\"System Admin\",\"r4\":\"2013-06-08T05:51:23.000Z\",\"r5\":1,\"r6\":\"System Admin\",\"r7\":false}"]
    
DownloadJSON2CSV(jsonStr);

function DownloadJSON2CSV(objArray)
{
    var str = '';
    for(var i = 0; i < objArray.length; i++)
    {
        var array = typeof objArray[i] != 'object' ? JSON.parse(objArray[i]) : objArray[i]; 
        var line = '';
        
        for (var index in array)
        {
            line += array[index] + ",";
        }

        line.slice(0,line.Length-1); 
        str += line + '\r\n';
    }

    window.open( "data:text/csv;charset=utf-8," + escape(str))        
}