On Sat, Aug 27, 2011 at 11:13 PM, John-David Dalton < [email protected]> wrote:
> So I have read the section (and the notes associated with it) over > what a direct call to eval is: > http://es5.github.com/#x15.1.2.1.1 > http://dev.w3.org/html5/spec/Overview.html#script-s-global-object > > > A direct call to the eval function is one that is expressed as a > CallExpression that meets the following two conditions: > > The Reference that is the result of evaluating the MemberExpression in > the CallExpression has an environment record as its base value and its > reference name is "eval". > > The result of calling the abstract operation GetValue with that Reference > as the argument is the standard built-in function defined in 15.1.2.1. > > But I am still a little unsure if `window.eval(…)` is a direct call or not. > I have heard `window.eval()` is an indirect call but wanted to make sure. > > I see it as > <call expression><member expression> window.eval</member expression> > (…) </call expression> > > Wouldn't the result of evaluating the MemberExpression `window.eval` > have global's environment record as its base and a reference name of > `eval`? > No. It's the global object what is the base (more precisely, its DOM's proxy wrapper -- `window` or either the global itself), but not an environment record. > Is `window.eval(..)` a direct call to eval? > > No, it's indirect. http://dmitrysoshnikov.com/ecmascript/es5-chapter-2-strict-mode/#indirect-eval-call Dmitry.
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