include multiple js files using jQuery $.getScript()
$.when(
$.getScript( "/mypath/myscript1.js" ),
$.getScript( "/mypath/myscript2.js" ),
$.getScript( "/mypath/myscript3.js" ),
$.Deferred(function( deferred ){
$( deferred.resolve );
})
).done(function(){
//place your code here, the scripts are all loaded
});