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Re: Simple parameter passing within a setInternal() call?

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Tuxedo schrieb:
> How can a simple string parameter be passed between two functions while
> inside a setInterval call? For example:
>
> function initialFunction(x){
> alert(x);
> setInterval('repeatingStuff(x)',5000);
> }
>
> function repeatingStuff(x){
> alert(x);
> }
> ...
>
> <a href="..." onclick="initialFunction('param_x');">stuff</a>
>
> But the error "x is not defined" results from ..Stuff(x) in
> setInterval('repeatingStuff(x)',5000). How can the parameter between the
> two functions be passed within the setInteval bit?

x must be in the scope of the second function. Therefore, you should 
define repeatingStuff inside the initialFunction:

function initialFunction(x){
    alert(x);
    function repeatingStuff(x){
       alert(x);
    }
    setInterval(repeatingStuff,5000);
}

or shorter:

function initialFunction(x){
    alert(x);
    setInterval( function(x){
       alert(x);
    }, 5000);
}

You should pass a function to setIntervall/Timeout, instead of a code to 
be evaluated each time (slow & buggy).

Another alternative is to use bind() or other functions, to return a 
function which calls repeatingStuff with the needed parameters:

function repeatingStuff(){...}
function initialFunction(x){
    alert(x);
    setInterval( repeatingStuff.bind(this, x), 5000);
}

Greetings,
  Bergi

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Thread

Simple parameter passing within a setInternal() call? Tuxedo <tuxedo@mailinator.com> - 2012-02-11 20:04 +0100
  Re: Simple parameter passing within a setInterval() call? Tuxedo <tuxedo@mailinator.com> - 2012-02-11 20:39 +0100
    Re: Simple parameter passing within a setInterval() call? Dr J R Stockton <reply1206@merlyn.demon.co.uk> - 2012-02-12 22:02 +0000
  Re: Simple parameter passing within a setInternal() call? Andreas Bergmaier <andber93@web.de> - 2012-02-11 21:39 +0100
    Re: Simple parameter passing within a setInternal() call? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-02-11 22:06 +0100
      Re: Simple parameter passing within a setInternal() call? Andreas Bergmaier <andber93@web.de> - 2012-02-11 22:33 +0100
        Re: Simple parameter passing within a setInternal() call? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-02-11 23:44 +0100
          Re: Simple parameter passing within a setInternal() call? Andreas Bergmaier <andber93@web.de> - 2012-02-12 03:04 +0100
        Re: Simple parameter passing within a setInterval() call? Tuxedo <tuxedo@mailinator.com> - 2012-02-12 09:22 +0100

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