security - Dynamically load JavaScript with JavaScript -

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after on hour of trying work i'm thinking it's because of cross domain policies, thought work. can't find lot of info on either. but, here issue. have site called http://mysite.com , include 3rd party script (what im writing) , @ http://supercoolsite.com/api/script.js , script needs dynamically load google maps api at: http://maps.google.com/maps/api/js?sensor=false before runs. well, figured code work:

function loadscript(filename,callback){   var fileref=document.createelement('script');   fileref.setattribute("type","text/javascript");   fileref.setattribute("src", filename);   fileref.onload = callback();   if (typeof fileref!="undefined"){     document.getelementsbytagname("head")[0].appendchild(fileref)   } }  loadscript('http://maps.google.com/maps/api/js?sensor=false',function(){   console.log('done loading');   init(); });

but response in console is:

api.js:408 done loading api.js:115 test api.js:310 uncaught referenceerror: google not defined

the "test" @ top of init(). so, it's loading script, it's not executing it, seems. so, ideas? if cross site scripting issue method of fixing think of having php script on our end sets header text/javascript header , echo file_get_contents() googlemaps.php file host. try speak, but, if possible, way pure js awesome.

p.s. tried adding jquery, doing getscript(), , still didnt work

-- update --

see fiddle: http://jsfiddle.net/ycmca/2/

you'll see error in console: uncaught typeerror: undefined not function

despite google variable global.

you have minor error:

fileref.onload = callback();

this call callback , assign return value fileref.onload.

it should be

fileref.onload = callback;

you should add handler before set source (just in case).

demo


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