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Re: Wierd use of "new function() {}"

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On 29/12/2013 01:06, Robert Crandal wrote:
> Another question about John Resig's book, "Pro
> JavaScript Techniques" (C) 2006.
>
> On page 210, the following JavaScript code is
> seen:
>
>     for (i = 0; i < elem.length; i++) new function() {
>
>            /* code snipped here */
>     }
>
> I don't think I've ever seen a "new function()" statement
> used right after a "for" statement.  Is this valid code that
> is used for a certain purpose?  Or am I looking at
> another possible typo in the book?
>

new function () { } is a "constructor anonymous function", that creates 
a new Object {}.

Douglas Crockford once wrote: "It is never a good idea to put new 
directly in front of function. For example, new function provides no 
advantage in constructing new objects."
<http://yuiblog.com/blog/2006/11/13/javascript-we-hardly-new-ya/>

Coming from a John Resig's book, we can expect everything (the good, the 
bad and ugly).

-- 
Joao Rodrigues

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Wierd use of "new function() {}" "Robert Crandal" <noreply2me@yahoo.com> - 2013-12-28 20:06 -0700
  Re: Wierd use of "new function() {}" "Robert Crandal" <noreply2me@yahoo.com> - 2013-12-28 20:42 -0700
    Re: Wierd use of "new function() {}" Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-12-29 17:45 +0100
  Re: Wierd use of "new function() {}" Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2013-12-29 02:26 -0200
    Re: Wierd use of "new function() {}" John Harris <niam@jghnorth.org.uk.invalid> - 2013-12-29 11:07 +0000
      Re: Wierd use of "new function() {}" Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2013-12-29 11:52 -0200
      Re: Wierd use of "new function() {}" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2013-12-29 19:39 +0000
        Re: Wierd use of "new function() {}" John Harris <niam@jghnorth.org.uk.invalid> - 2013-12-30 15:27 +0000

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