Create new array with character length overrun

/**
* Prevent Address Book length beyond database storage length 4294967295
* */

if (GetLength (Json.stringify (arr)) >=4294967295) {            console.log (' length overrun ');             var mydata = json.stringify (arr). substr (0, 4294967295-2);            Console.log (mydata.substring(0,mydata.lastindexof (', {')) + '] ');        } Else {            //json.stringify (arr) database deposit        }

    functionGetLength (str) {///<summary> Get string actual length, Chinese 2, English 1</summary>        ///<param name= "str" > string to get length </param>        varReallength = 0, Len = str.length, charcode = 1;  for(vari = 0; i < Len; i++) {CharCode=str.charcodeat (i); if(charcode >= 0 && charcode <=) Reallength + = 1; ElseReallength + = 2; }        returnreallength; };

Create new array with character length overrun