1 JSON.stringify 2 var o={"a":1,"b":2,"c":"cc","d":{"aaa":1,"bbb":"2"}}; 3 function o2s(o){ 4  var s=[‘{‘]; 5  for(var k in o){ 6  s.push(‘"‘+k+‘":‘); 7  if(typeof o[k] ==‘number‘){ 8  s.push(o[k]); 9  }else if(typeof o[k]==‘object‘){10  s.push(o2s(o[k]));11  }else{12  s.push(‘"‘+o[k]+‘"‘);13  }14  s.push(‘,‘);15  }16  s.pop();17  s.push(‘}‘);18  return s.join(‘‘);19 }20 var s=o2s(o);21 console.log(JSON.parse(s));22 alert(o);