一讲到闭包，通常就是类似下面的例子――
var generateClosure = function() {
var count = 0;
var get = function() {
count ++;
return count;
};
return get;
};
var counter = generateClosure();
有的人甚至说，只有从一个函数里返回另一个函数才能算是闭包。
但是根据《Professional Javascript for Web Developers》的定义――
Closures are functions that have access to variables from another function’s scope. This is often accomplished by creating a function inside a function.
犀牛书――
Technically, all JavaScript functions are closures: they are objects, and they have a scope
chain associated with them.
那下面这段代码算不算产生了闭包？
var generateClosure = function() {
var count = 0;
var get = function() {
console.log(count);
};
get();
};
generateClosure();
------解决方案--------------------
产生过。又销毁了。
不会用调试器，看更多书也没用。