Javascript Get Function By Pointer

Question

Quick question: How do I get a pointer to a pre-declared function in javascript.

Say in my .js file I have

function a() {
    var bref = `a pointer/ref to b() here`
}

function b(param) {
    ...
}

I want bref to be simply a pointer to the function b and not just the result of a call to b()

Edit: Forgot to mention: function b takes in one parameter i.e b(param)

Have tried bref = b

Chandu · Accepted Answer · 2011-06-18 12:46:46Z

6

Just use the function name for assignment.

To call the function you can use

call

or

apply

methods.

e.g:

function a() {
    var bref = b;
    .
    .
    b.call(null, "Something")
}

function b(src) {
    ...
  alert(src);
}

answered Jun 18, 2011 at 12:28

Chandu

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1 Comment

Sorry forgot to mention, b takes a parameter. I tried doing: bref = b But it still has problems.

Alex K. · Accepted Answer · 2011-06-18 12:28:50Z

2

You can simply:

function a() {
    var bref = b;
    ...
    x = bref("cake");
}

function b() {
    ...
}

answered Jun 18, 2011 at 12:28

Alex K.

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