Passing a function reference as a callback function

Question

How do I used a function I defined somewhere as a callback function. I am trying to pass a named function to lodash:

function boo(value, key) {
  // do something
}

_.forOwn(object, boo(value, key));

This doesn't work, I get value is not defined. What is the right way to do it?

Put the console.log(value) before _.forOwn(object, boo(value, key)) — Emir Marques, Oct 13 '15 at 17:38
Also see http://stackoverflow.com/questions/7137401/why-is-the-method-executed-immediately-when-i-use-settimeout?lq=1 and many many other duplicates — zzzzBov, Oct 13 '15 at 17:40

score 4 · Accepted Answer · answered Oct 13 '15 at 17:38

4

Here, you are invoking the function, not passing a ref boo(value, key)

To pass a ref to the function, just type the name of the function as an argument _.forOwn(object, boo);

answered Oct 13 '15 at 17:38

posit labs

1 Answers1