Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #31592 > unrolled thread

How to re-write the following?

Back to article view | Back to comp.lang.javascript

Contents

  How to re-write the following? justaguy <lichunshen84@gmail.com> - 2016-10-20 21:06 -0700
    Re: How to re-write the following? JJ <jj4public@vfemail.net> - 2016-10-21 20:46 +0700
      Re: How to re-write the following? justaguy <lichunshen84@gmail.com> - 2016-10-21 08:42 -0700
      Re: How to re-write the following? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-10-21 17:51 +0100
    Re: How to re-write the following? justaguy <lichunshen84@gmail.com> - 2016-10-21 15:11 -0700

#31592 — How to re-write the following?

Hi,

Current, I have a function, that is working perfectly.
It's like this:	
	myFN = function() { ... }

I wonder if we can rewrite it into something like below
( function() {}
());

Then, how would myFN fit into it?

Thanks.

[toc] | [next] | [standalone]

#31594

On Thu, 20 Oct 2016 21:06:06 -0700 (PDT), justaguy wrote:
> Hi,
> 
> Current, I have a function, that is working perfectly.
> It's like this:	
> 	myFN = function() { ... }
> 
> I wonder if we can rewrite it into something like below
> ( function() {}
> ());
> 
> Then, how would myFN fit into it?
> 
> Thanks.

You can't if you need to refer the function more than once.
Otherwise, just copy the function body. e.g.:

  myFN = function() {
    console.log(123);
    console.log(456);
  };

Become:

  (function() {
    console.log(123);
    console.log(456);
  })();

[toc] | [prev] | [next] | [standalone]

#31595

On Friday, October 21, 2016 at 9:46:29 AM UTC-4, JJ wrote:
> On Thu, 20 Oct 2016 21:06:06 -0700 (PDT), justaguy wrote:
> > Hi,
> > 
> > Current, I have a function, that is working perfectly.
> > It's like this:	
> > 	myFN = function() { ... }
> > 
> > I wonder if we can rewrite it into something like below
> > ( function() {}
> > ());
> > 
> > Then, how would myFN fit into it?
> > 
> > Thanks.
> 
> You can't if you need to refer the function more than once.
> Otherwise, just copy the function body. e.g.:
> 
>   myFN = function() {
>     console.log(123);
>     console.log(456);
>   };
> 
> Become:
> 
>   (function() {
>     console.log(123);
>     console.log(456);
>   })();

ok, thanks.

[toc] | [prev] | [next] | [standalone]

#31596

JJ wrote:

> On Thu, 20 Oct 2016 21:06:06 -0700 (PDT), justaguy wrote:
>> Current, I have a function, that is working perfectly.
>> It's like this:
>> myFN = function() { ... }
>> 
>> I wonder if we can rewrite it into something like below
>> ( function() {}
>> ());
>> 
>> Then, how would myFN fit into it?
> 
> You can't if you need to refer the function more than once.

The question is sufficiently unclear¹ to allow for several interpretations 
of it (and the OP is not available on my server).  Perhaps what was really 
being asked is how to create a private namespace in which the function is 
defined, which is a common task.  If so, then one way would be to change

  var myFN = function () {
    // …
  };

into

  var myFN = (function () {
    "use strict";

    /* private variables */

    return function () {
      // …
    };
  }());

while the function call remains the same.  Or into the module pattern –

  var my = (function () {
    "use strict";

    /* private variables */

    return {
      fn: function () {
        // …
      }
    };
  }());

– and then instead of

  myFN();

write

  my.fn();

Note that “this” in the function will then refer to the same object as “my”.

Also note how a function is defined and called differ in my code style so 
that it becomes easier to tell them apart.

________
¹  see <http://catb.org/esr/faqs/smart-questions.html>
-- 
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
Please do not cc me. / Bitte keine Kopien per E-Mail.

[toc] | [prev] | [next] | [standalone]

#31597

On Friday, October 21, 2016 at 12:06:26 AM UTC-4, justaguy wrote:
> Hi,
> 
> Current, I have a function, that is working perfectly.
> It's like this:	
> 	myFN = function() { ... }
> 
> I wonder if we can rewrite it into something like below
> ( function() {}
> ());
> 
> Then, how would myFN fit into it?
> 
> Thanks.

Helpful.  Thank you.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.javascript

csiph-web