请帮助理解下面的代码://defineourfunctionwiththecallbackargumentfunctionsome_function(arg1,arg2,callback){//thisgeneratesarandomnumberbetween//arg1andarg2varmy_number=Math.ceil(Math.random()*(arg1-arg2)+arg2);//thenwe'redone,sowe'llcallthecallbackand//passourresultcallback(my_number);}//callthefunctionsome