How can I target a variable with string content in a jQuery wrapper ?

Question

Basically what I am after is this,

var foo = 'I am foo!';
alert(window['foo']);

// output = I am foo!

This does not work in a jQuery wrapper, I understand that it may be due to jQuery having renamed the window object or whatnot. If anyone has any inkling as to if this may be possible in a jQuery wrapper, I would appreciate the knowledge !

Answer 1

foo = "I am foo!";

If you have a function scope around your var line, it'll define it as a local variable instead of a global variable. It's not jQuery "renaming the window object" or anything silly like that, it's just how var works. I'd personally doing

window.foo = "I am foo!";
// or
window["foo"] = "I am foo!";

though, to make it explicit you wanted to define a global variable. Or use a comment to say that.

Answer 2

jQuery doesn't rename the window object - jQuery is actually under it (window.jQuery).

Try this:

window.foo = 'I am foo!';
alert(window.foo);