google chrome extension - using promises in javascript -

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var promise = new promise(function(resolve, reject) {          //asynchronous part          var dom_domain_name_encoded;         chrome.tabs.query({              "active": true,             "currentwindow": true,             "status": "complete",             "windowtype": "normal"         }, function (tabs) {             (tab in tabs) {                 dom_domain_name_encoded=tabs[tab].url;                 dom_domain_name_encoded = encodeuricomponent(dom_domain_name_encoded);                 console.log(dom_domain_name_encoded);                 // return dom_domain_name_encoded;             }         });         //asynchronous part ends here.          if (dom_domain_name_encoded) {             console.log("encoded , returning");             resolve(dom_domain_name_encoded);         }         else {             console.log("error");             reject(error("it broke"));         }     });      promise.then(         function(dom_domain_name_encoded) {             console.log(dom_domain_name_encoded);         }     ).catch(         function(reason) {             console.log("promise not working");         }     );

i created promise in chrome.tabs function getting executed. being asynchronous function put there. fetched url of current tab , passes .then method. in reference promises, expect run .then method going wrong , "error" getting in console.

am doing wrong?


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