I want to retrieve all objects (not DOM elements) of a given type created with the new keyword.
Is it possible ?
function foo(name)
{
this.name = name;
}
var obj = new foo();
How can I retrieve a reference to all the foo objects ?
If they were all assigned in the global scope, and you don't need to check across iframe/window boundaries, and you do not need to do this in IE (eg you're just trying to debug something), you should be able to iterate over the global scope:
var fooObjects = [];
for(var key in window) {
var value = window[key];
if (value instanceof foo) {
// foo instance found in the global scope, named by key
fooObjects.push(value)
}
}
Buuuuut you probably have some foos instantiated inside functions somewhere, in which case they're not available.
You can perhaps try modifying the constructor prior to instantiations:
var fooObjects = [];
var oldFoo = window.foo;
window.foo = function() {
fooObjects.push(this);
return oldFoo.apply(this, arguments);
}
foo.prototype = oldFoo.prototype;
