Re: [Proposal] Implementing XMLForm with Flow

[Christopher Oliver]

Hi Ugo,

Ugo Cei wrote:

function checkLogin(funarg)
{
  if (user == null)
    login();
  funarg();
}

This doesn't seem to work. It always generates an error message like "org.mozilla.javascript.EvaluatorException: checkout is not a function."

But if I invoke the same function directly from the sitemap, without passing its name as an argument, it works.

What's happening here?

Ugo

Try this:

function checkLogin(funarg) {
if (user == null) {
login();
this[funarg]();
}
}

funarg is just the string "checkout", to get to the checkout() function you need to dereference the global scope object (this). In JavaScript, using the [] operator with a string argument behaves the same as using the dot operator. However, the dot operator requires a literal identifier. If you want to use a variable (as in this case) then you must use the [] operator.

Regards,

Chris


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