Find JavaScript function definition in Chrome

Question

Chrome\'s Developer Tools rock, but one thing they don\'t seem to have (that I could find) is a way to find a JavaScript function\'s definition. This would be super handy fo

Answer 1

If you are already debugging, you can hover over the function and the tooltip will allow you to navigate directly to the function definition:

Further Reading:

• Chrome DevTools > JavaScript Debugging Reference

Answer 2

2016 Update: in Chrome Version 51.0.2704.103

There is a Go to member shortcut (listed in settings > shortcut > Text Editor). Open the file containing your function (in the sources panel of the DevTools) and press:

ctrl + shift + O

or in OS X:

⌘ + shift + O

This enables to list and reach members of the current file.

Answer 3

I find the quickest way to locate a global function is simply:

1. Select Sources tab.
2. In the Watch pane click + and type window
3. Your global function references are listed first, alphabetically.
4. Right-click the function you are interested in.
5. In the popup menu select Show function definition.
6. The source code pane switches to that function definition.

Answer 4

You can print the function by evaluating the name of it in the console, like so

> unknownFunc
function unknownFunc(unknown) {
    alert('unknown seems to be ' + unknown);
}

this won't work for built-in functions, they will only display [native code] instead of the source code.

EDIT: this implies that the function has been defined within the current scope.

Answer 5

This landed in Chrome on 2012-08-26 Not sure about the exact version, I noticed it in Chrome 24.

A screenshot is worth a million words:

I am inspecting an object with methods in the Console. Clicking on the "Show function definition" takes me to the place in the source code where the function is defined. Or I can just hover over the function () { word to see function body in a tooltip. You can easily inspect the whole prototype chain like this! CDT definitely rock!!!

Hope you all find it helpful!