كيف أستخرج عنصر معين من API

السلام عليكم

لدي هذا الكود

رابط :

// API callback
labelthumbs({"version":"1.0","encoding":"UTF-8","feed":{"xmlns":"

http://www.w3.org/2005/Atom ","xmlns$openSearch":" http://a9.com/-/spec/opense... ","xmlns$blogger":" http://schemas.google.com/b... ","xmlns$georss":" http://www.georss.org/georss ","xmlns$gd":" http://schemas.google.com/g... ","xmlns$thr":" http://purl.org/syndication... ","id":{"$t":"tag:blogger.com,1999:blog-3003315587923092969"},"updated":{"$t":"2018-05-09T10:43:43.055-07:00"},"category":[{"term":"hot movie"},{"term":"action"},{"term":"review"},{"term":"best sellers"},{"term":"box office"},{"term":"trailer"},{"term":"animated"},{"term":"cartoon"},{"term":"drama"},{"term":"horror"},{"term":"mystery"},{"term":"youth"}],"title":{"type":"text","$t":"قالب أفلام جديد"},"subtitle":{"type":"html","$t":""},"link":[{"rel":" http://schemas.google.com/g... %23feed","type":"application/atom+xml","href":" http: \/\/mxmmdddf.blogspot.com\/feeds\/posts\/default"},{"rel":"self","type":"application/atom+xml","href":" http: \/\/www.blogger.com\/feeds\/3003315587923092969\/posts\/default\/-\/LOVE?alt=json-in-script"},{"rel":"alternate","type":"text/html","href":" http: \/\/mxmmdddf.blogspot.com\/search\/label\/LOVE"},{"rel":"hub","href":" http: //pubsubhubbub.appspot.com/"}],"author":[{"name":{"$t":"meddev"},"uri":{"$t":" http: \/\/www.blogger.com\/profile\/10703537993948747984"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":" http://schemas.google.com/g... %23thumbnail","width":"16","height":"16","src":" https: \/\/img1.blogblog.com\/img\/b16-rounded.gif"}}],"generator":{"version":"7.00","uri":" http: //www.blogger.

وأريد استخراج هذا العنصر فقط :

http: \/\/mxmmdddf.blogspot.com\/search\/label\/LOVE

باستعمال مثل الصيغة التالية :

        var n = e.feed.entry[t];