Object Fishing

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>My recursion</title>
 <script src="./db/filesystem.js"></script>
</head>
<body>
<div id="out"></div>
<script>
var div=document.getElementById("out");
var ObjInObj={
    GetObjectById: function (obj,target, sqBrckt, withComma, range){
        var str=JSON.stringify(obj);
        var a,b=str.length,c=0,d=0,e = str.indexOf('"'+target+'"');
        //a-used for current position in string
        //b-json object string length, c - bracket counter: { }, d - bracket counter: [ ]
        //e-unique string in object
        if (e>-1){
            a=e+1;
            while (((c+d)<range)&&(a>=0)) {
                a--;
                switch (str.charAt(a)) {
                  case "{": c++; break;
                  case "}": c--; break;
                  case "[": sqBrckt ? d++ : null; break;
                  case "]": sqBrckt ? d-- : null; break;
                }
            }

            //a-start position in string for object
            //e-ending position in string for object

            while ((e<b)&&((c>0)||(d>0))) {
                e++;
                switch (str.charAt(e)) {
                  case "{": c++; break;
                  case "}": c--; break;
                  case "[": sqBrckt ? d++ : null; break;
                  case "]": sqBrckt ? d-- : null; break;
                }
            }
            var prev=str.charAt(a-1);
            var next=str.charAt(e+1);

            withComma !== false ? (((prev == ",")&&(next != ",")) ? a-- : ((((prev != ",")||(prev == ","))&&(next == ",")) ? e++ : null)) : null

            return str.substring(a,e+1);
        }
        return "";
    },
}



                    //big object   target countSquarBrackets   ?   range:1 only target, target and siblings too
div.innerHTML=ObjInObj.GetObjectById(fs.parent,"de1eplv23",true,false,6);
</script>
</body>
</html>