Capture functions in Javascript

Question

Is there any specific way for me to capture functions that have been defined in a Javascript file? It is for testing purposes for me to choose functions I want to perform tests in the Javascript file.

Thanking you in advance

Could you explain more what you want to achieve? Do you want to make a text file with all the names of the functions or what? — Lucio
– Lucio, Commented Feb 3, 2014 at 18:42
possible duplicate of List of global user defined functions in JavaScript? — Patrick Evans
– Patrick Evans, Commented Feb 3, 2014 at 18:45
I want to build a web page where the user will be asked to upload a certain javascript file and then all functions found in that file would be captured where the user could select upon which functions tests will be performed. may be in a drop down list or something — user3264801
– user3264801, Commented Feb 3, 2014 at 18:45
feel free to steal my getNatives() function from danml.com/packager, i think ittl work for this... — dandavis
– dandavis, Commented Feb 3, 2014 at 18:52

rafaelcastrocouto · Accepted Answer · 2014-02-03 19:24:23Z

1

You can programmatically get a list of all the user-defined global functions as follows:

var listOfFunctions = [];
for (var x in window) {
if (window.hasOwnProperty(x) && 
  typeof window[x] === 'function' &&
  window[x].toString().indexOf('[native code]') < 0)
    listOfFunctions.push(x);      
}

Demo

The listOfFunctions array will contain the names of all the global functions which are not native.

The above won't work in Internet Explorer 8 and earlier for global function declarations.

edited Feb 3, 2014 at 19:24

rafaelcastrocouto

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answered Feb 3, 2014 at 18:54

SK.

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2 Comments

dandavis Over a year ago

but that says what's in window, not a certain file, and it would hit already-loaded functions, not just the file's.

user3264801 Over a year ago

no but this is not what I am looking for. I would like to have a list of all the functions in the file whether loaded or not. For selection in testing.

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