myfunction = function() { //function }

benf posted this at 16:16 — 15th January 2008.

Joined: Feb 2005

Im not sure about the type of function declaration that is shown in the example below:

onload=function() {
for(c=0;c<anc.length;c++) {
if(anc[c].className=='pup') {
   anc[c].onclick=function() {
   popUp(this.href);
   return false;
    }
   }
  }
 }

Or is this how you declare a recursive function (a function that calls itself)?

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JeevesBond posted this at 20:00 — 15th January 2008.

He has: 3,956 posts

Joined: Jun 2002

It looks like a function for recursing through all the links on a page, changing their onclick handlers to run the popUp function. Does that make sense? There's got to be more to it than that, anc must be defined somewhere: getElementByTagName or something like that.

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benf posted this at 20:30 — 15th January 2008.

They have: 426 posts

Joined: Feb 2005

Thanks for the reply jeeves, i understand what it is supposed to do what i dont understand is why you declare the function like:

something = function(){

}

rather than:

function(){

}

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JeevesBond posted this at 18:07 — 16th January 2008.

He has: 3,956 posts

Joined: Jun 2002

Ah, I see what you're getting at. It's attaching the function to an onload event, if it were just:

function dave() {
  ... code ...
}

'
That by itself wouldn't do anything, just define a function. It would work just as well to do:

function dave() {
  ... code ...
}
window.onload = dave;

'
But that's not as neat. What you first posted is a good example of Javascript's support for functions as first-class objects. Simply put: functions are treated just like variables in Javascript, it's pretty good stuff.

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