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我只是想知道這可能是JavaScript回調函數的例子:這是一個JavaScript回調函數的例子嗎?
function doing_stuff(str,callback) //external *asynchronous* function
{
if(confirm(str)) callback(true);
else callback(false);
}
function main_func() //main function
{
var to_be_sent='NONE'; //return value set with default
var callback = function callback(r) //funzione di callback
{
to_be_sent=r;
}
doing_stuff('Sure?',callback); //external function call with *callback*
return to_be_sent;
}
這裏是回調的維基百科頁面:https://en.wikipedia.org/wiki/Callback_(computer_programming) – Clomp