Function named and called by a parameter value?

Discussion in 'Javascript' started by Tuxedo, Feb 13, 2012.

  1. Tuxedo

    Tuxedo Guest

    Is it possible to create a dynamically named function by a parameter and
    then run the created function within the block of the initial function by
    parameter reference, without literally typing the name of the
    parameter-named function within the initial function block? Something like:

    function main_function(param){

    function ??? (){ // create a function named by the parameter value
    d = document.title;

    return ???() // run sub_function by a parameter reference


    main_function('sub_function') // name the function, e.g. 'sub_function'

    Surely the construct would not look close to the above...

    Thanks for any ideas!

    Tuxedo, Feb 13, 2012
    1. Advertisements

  2. It is exactly the same as with your variables in your former thread. As
    you store objects in variables, and functions are objects, and you can
    store any values within objects:
    Use objects!

    They work as maps. Surely you already know accessing object propertys
    with the dot syntax:

    var o = {a:1:, b:3};
    o.a; // 1

    But you can also access them with bracket syntax:

    var propname = "b";
    o[propname]; // 3

    So you will use a object for your problem, where you can store any
    values and even functions:

    var myfn = function(params) { <body>; };

    is also a valid way to store functions. Of course this one has no "name"
    (you can't set names of functions), but you can easily call it with

    That makes no sense. Why should you want to "name" a internal function,
    which you never will see, and which is called inside the global
    function? Just use

    function main_function() { // no "param"
    return alert(document.title);

    Andreas Bergmaier, Feb 13, 2012
    1. Advertisements

  3. Tuxedo

    Tuxedo Guest

    Stefan Weiss wrote:

    I will try and post the bigger picture when I have a bit more workable code.

    Tuxedo, Feb 14, 2012
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.