javascript: function call to itself

Question

I suppose the following code:

jQuery("#mybutton").click(function(){

    //do something

});

How could I recall to this function "anonymous"?, I can not put a name to this function:

var xfun = function(){

    //do something

}

jQuery("#mybutton").click(xfun);

I can do something like this:

var working = false;
jQuery("#mybutton").click(function(){

  if (working){
    var _this = this;
    _this._eventType = e.type;
    setTimeout(function() { jQuery(_this).trigger(_this._eventType); }, 200);
    return false;
  }
  //do something

});

what I need is something like this:

var working = false;
jQuery("#mybutton").click(function(){

  if (working){
    setTimeout( this_function, 200);
    return false;
  }
  //do something

});

thanks.

EDIT:

Solution:

jQuery("#mybutton").click(function(){
  if (working){
    var fn = arguments.callee;
    var _this = this;
    setTimeout(function(){fn.call(_this);}, 200);
    return false;
  }
  //do something    
});

@Oscar: the question is "how do I re-run an anonymous function from inside the anonymous function?" — Crescent Fresh
– Crescent Fresh, Commented Nov 24, 2009 at 18:00

Crescent Fresh · Accepted Answer · 2009-11-24 17:58:39Z

20

You can indeed name your anonymous function:

jQuery("#mybutton").click(function doWork(){
  if (working){
    setTimeout(doWork, 200);
    return false;
  }
  //do something    
});

You can also use arguments.callee:

jQuery("#mybutton").click(function(){
  if (working){
    setTimeout(arguments.callee, 200);
    return false;
  }
  //do something    
});

I'd go with the former.

answered Nov 24, 2009 at 17:58

Crescent Fresh

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4 Comments

Crescent Fresh Over a year ago

@andres: np. Tis an important question considering the deprecation of arguments.callee: developer.mozilla.org/En/Core_JavaScript_1.5_Reference/…

bobince Over a year ago

Only Function.arguments.callee is deprecated (the whole of Function.arguments is a terrible idea); arguments.callee is still OK. Whilst I too would probably go with the named function expression, note there is a bug in IE where the name is visible not only inside the function as expected, but also in the parent scope, as if you'd written a function statement. So make sure you don't use the name doWork in the surrounding function (or global).

andres descalzo Over a year ago

with the modification that I show in question (edition), I could solve the problem that had the context of the function. thank @Crescent Fresh

buley Over a year ago

worth noting, a named function is no longer anonymous. it's just a closure.

MMM · Accepted Answer · 2014-02-19 12:14:00Z

1

Can you explain why you can't name the function? You can use arguments.callee to get a reference to the current function, but that is deprecated and I'm not sure how much support it has among current browsers.

edited Feb 19, 2014 at 12:14

MMM

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answered Nov 24, 2009 at 18:06

jthg

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