_obj = {url:"/post/11/1", title:"안녕하세요"};
{url: "/post/11/1", title: "안녕하세요"}

JSON.stringify(_obj);
"{"url":"/post/11/1","title":"안녕하세요"}"

JSON.parse(JSON.stringify(_obj));
{url: "/post/11/1", title: "안녕하세요"}










-- 에러발생
JSON.parse("[{'path':'/post/11/1/', 'title':'안녕하세요'}]");
Uncaught SyntaxError: Unexpected token ' in JSON at position 2
    at JSON.parse (<anonymous>)
    at <anonymous>:1:6

-- 에러발생
JSON.parse("[{"path":"/post/11/1", "title":"안녕하세요"}]");
Uncaught SyntaxError: missing ) after argument list

-- 정상처리
JSON.parse('[{"path":"/post/11/1", "title":"안녕하세요"}]');
0: {path: "/post/11/1", title: "안녕하세요"}