John J Barton wrote:
Thanks!
I guess I should ended my question this way: ...and because
developers want to write code that works in browsers and not, perhaps
ES can have a solution that is not as silly as the ones we are using
now.
I'm not sure what the problem is -- I read the old thread, and noticed
the solution:
/var global = Function("return this")();/
This is good for any code mode, strict or non-strict. Does CSP ban
Function as well as eval?
But really, what's wrong with the old chestnut of capturing the global
early at top level?
/var global = this;/
and using that name, or passing its value around, as needed?
It's not as if one must be able to utter an expression deep in a
function nest to get a global -- or as if there is any identifier that
might not be shadowed. We are not going to add a special syntactic form
for "the global". So I don't think the solutions available or "silly",
or the problem is exactly what this thread makes it out to be.
But possibly I misunderstood the problem.
/be
jjb
On Thu, Aug 23, 2012 at 6:41 PM, Andrea Giammarchi
<[email protected]> wrote:
the non eval solution for ES3 is
var global = function(){return this}();
and not with eval ...
In ES5 usually window is not writable/configurable but enumerable so
theoretically you can rely in the `window` object unless your code is not
evaluated through eval inside a function with a window variable redefined.
On Thu, Aug 23, 2012 at 11:59 PM, John J Barton
<[email protected]> wrote:
Long ago this list had a subject:
How to retrieve the global object in strict mode?
https://mail.mozilla.org/pipermail/es5-discuss/2011-February/003919.html
Roughly the conclusion was:
var global = ("global", eval)("this");
However Content Security Policy
https://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html
bans 'eval', (as well as all similar forms) making this solution fail.
Is there a non-eval based solution?
jjb
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