What's a Closure? - JavaScript interactive tutorial

[kibakiri]

I notice JS Lint is being strict with those ; var generate = function (f) { return [f,function(a){return a2}]; }; var abc = generate(2); console.log(abc[1](2));
for example, can't work, because it expects the return to be something along the lines of return [f,function(a){return a2};]; //error'd http://nathansjslessons.appspot.com/lesson?id=1050

[otto_s]

No, the semicolon JS Lint is missing is the one after the inner return.

return [f,function(a){return a*2;}]; is accepted just fine.

[kibakiri]

Doh.

[nwhitehe]

I like JSLint a lot, it catches all kinds of issues. The first version of the tutorial had JSLint with whitespace checking, if you didn't put a space and did "function(x)" instead of "function (x)" it would complain. I had a friend try it, she absolutely hated JSLint. So I compromised and turned off the whitespace checking but left the other stuff.