如何在功能中找到关键词？

Thanks for your help first!

I have some jscripts like:

var id="001";

var name="Jerry";
...

function f1() {
  ...
  var qid="q1";
  ...
}

...
var qid="aaabbb";
...

function f2(){
  ...
  var myid="q1";
  ...
}

...

I want to use regular expression to get the names of function that contains key word "q1". Is there a simple way to do so?

Functions can be defined within other functions in JavaScript, so using regular expressions to try to solve this problem is impossible. Sorry :-(

Also, the problem is underspecified. What function name do you want in a case like this?

function outerFunction(x, y) {
    var innerFunction = function(z) {
        return {
            firstProperty: function() {
                return "q1";
            }
        };
    };
}

See? Three different ways to declare a function. How would you create a solution general enough to know the "correct" (most relevant) function name for cases like this?

Here's the regex that seems to work for me:

(function(.*)\(.*|
*"q1")

and here's how I tested it:

http://rubular.com/r/APPNRR54oW

Try the following:

/^function ([^(]*?)\((?=(?:[^
]|
[^}])*("q1")).*?^}/ms

Note that this does not match "q1" when it is outside of a function, or function names that don't have "q1" inside. For each match the first group will be the function name and the second group will be "q1".

See it in action: http://rubular.com/r/xQwro38DUO

Here is an explanation:

$regex = <<<END
/
    ^function[ ]         # start looking when a line starts with function
    ([^(]*?)\(           # capture the function name into group 1
    (?=                  # start a lookahead
      (?:[^
]|
[^}])*  # consume characters until a line starts with '}'
      ("q1")             # or until we find "q1" (and place it in group 2)
    )                    # end lookahead
    .*?^}                # consume until end of function (optional)
/msx                     # m and s flags for consuming multiple line handling
END;