Convert a JSON object to a string
//assuming objConfig is the json object you want to convert
var strConfig = JSON.stringify(objConfig);
//the reverse process, when required
var objConfig=JSON.parse(strConfig);
var arrData=[];
var fnOnMessage=function(objMsg){
arrData.unshift(objMsg);
}
var fnExportData=function(){
var a = document.createElement("a");
var strData=JSON.stringify(arrData);
var file = new Blob([strData], {type: 'text/plain'});
a.href = URL.createObjectURL(file);
a.download = 'export.json';
a.click();
}