javascript - How to access the values of local variables globally -


this question has answer here:

i returned rsltcallback function , when call googlesearchsuggestions function , getting undefined. when console.log input parameter inside rsltcallback function it's printing output console.

  var googlesearchsuggestions = function(search_keyword , element) {       var parsed;      var  uri = 'http://suggestqueries.google.com/complete/search?output=toolbar&hl=en&q=' + search_keyword;      var xhr = (typeof xmlhttprequest !== 'undefined') ? new xmlhttprequest() : new activexobject(microsoft.xmlhttp);        xhr.onreadystatechange = function(){      xhr.responsetype = 'xml';        if(xhr.status == 200 && xhr.readystate == 4)     {        var response = xhr.responsexml;                var items = response.getelementsbytagname('toplevel')           (var = 0 ; < items[0].childnodes.length;i++)          {                parsed = items[0].childnodes[i].firstelementchild.getattribute('data');             rsltcallback(parsed);             }          }         };  xhr.open('get', decodeuri(uri), true);  xhr.send();  var rsltcallback = function(input){      return input;   };      return rsltcallback();  };

because have asynchronous function call in method need return parsedvalue @ later time. way called promises.

if want variable globally accessible can add window (eg. window.parsedoutput = ...).


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