使函数在闭包全局中声明而不使用窗口 [英] Make function declared in a closure global without using window
问题描述
如何在闭包中声明全局函数?这是一个谷歌应用程序脚本,因此没有窗口。
有关如何在Google应用程序脚本中使用闭包的文档,声明一个对象而不是一个函数。
http://code.google.com/googleapps/appsscript/articles /appengine.html
var JSON = JSON || {};
$ p $
// foo = function(){}
(function()
{
...
foo =函数(a,b)
{
...
}
foo.prototype =
{
...
}
// window.foo = foo; //不可能
}());
var globalFoo;
(函数()
{
...
foo =函数(a,b)
{
。 ..
}
foo.prototype =
{
...
}
globalFoo = foo;
// window.foo = foo; //不可能
}());
我在浏览器上运行的常规html中做了测试,工作正常。这里是例子:
var globalFoo;
console.log(O1)
console.log(globalFoo);
(function(){
console.log(I1)
console.log(globalFoo);
var x = 13;
var foo = function(){
console.log('foo caled'+ x);
x ++;
返回true;
}
foo();
globalFoo = foo;
console.log(I2)
console.log(globalFoo);
})();
console.log(O1)
console.log(globalFoo);
console.log(globalFoo());
萤火虫输出为:
$ b $
函数()
foo caled 14
true
How do I make a function declared in a closure, global ? This is for a google apps script, hence no window.
There is documentation on how to use closures in google apps scripts, but the example declares an object instead of a function.
http://code.google.com/googleapps/appsscript/articles/appengine.html
var JSON = JSON || {};
// foo = function(){}
(function ()
{
...
foo = function (a, b)
{
...
}
foo.prototype =
{
...
}
// window.foo = foo; // Not Possible
}());
This should work:
var globalFoo;
(function ()
{
...
foo = function (a, b)
{
...
}
foo.prototype =
{
...
}
globalFoo = foo;
// window.foo = foo; // Not Possible
}());
I've made a test in a regular html running on the browser and is works fine. Here is the example:
var globalFoo;
console.log("O1")
console.log(globalFoo);
(function(){
console.log("I1")
console.log(globalFoo);
var x = 13;
var foo = function() {
console.log('foo caled ' + x);
x++;
return true;
}
foo();
globalFoo = foo;
console.log("I2")
console.log(globalFoo);
})();
console.log("O1")
console.log(globalFoo);
console.log(globalFoo());
The firebug output to that is:
O1
undefined
I1
undefined
foo caled 13
I2
function()
O1
function()
foo caled 14
true
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