How do I pass a variable from JSON to the originating Javascript? -

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• how return response asynchronous call? 21 answers

i sending getjson request lastfm using code below. code within javascript script. can result getjson function , use outside of function variable, i.e. in within calling javascript?

function getartistinfo(lastfmartist) {      var urlartist = 'http://ws.audioscrobbler.com/2.0/?callback=?',         params = {             method:  "artist.getinfo",             artist: lastfmartist,             format:  "json",             api_key: "xxxxxxxxxx"         };      $.getjson(urlartist, params, function(data) {          var myartist = data.artist.bio.summary;      }); }  alert(myartist); 

you use callback

function isfunction(object) {   return (typeof object == 'function'); }  function getartistinfo(lastfmartist, callback) {    var urlartist = 'http://ws.audioscrobbler.com/2.0/?callback=?',   var params = {         method:  "artist.getinfo",         artist: lastfmartist,         format:  "json",         api_key: "xxxxxxxxxx"   };    $.getjson(urlartist, params, function(data) {     var myartist = data.artist.bio.summary;     if (isfunction(callback))     {       callback(myartist);     }   }); }  function getartistinfocomplete(myartist ) {   alert(myartist); } 

then call it

getartistinfo(lastfmartist, getartistinfocomplete);