List of global user defined functions in JavaScript?

Question

Is it possible to get a list of the user defined functions in JavaScript?

I\'m currently using this, but it returns functions which aren\'t user defined:

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Answer 1

As Chetan Sastry suggested in his answer, you can check for the existance of [native code] inside the stringified function:

Object.keys(window).filter(function(x)
{
    if (!(window[x] instanceof Function)) return false;
    return !/\[native code\]/.test(window[x].toString()) ? true : false;
});

Or simply:

Object.keys(window).filter(function(x)
{
    return window[x] instanceof Function && !/\[native code\]/.test(window[x].toString());
});

in chrome you can get all non-native variables and functions by:

Object.keys(window);