On Nov 8, 12:23 am, vtsuper <[EMAIL PROTECTED]> wrote:
> here are the third style
> var test = new Frm('frm1',{method:'post',url:'testing.php'});
> var test = new Frm('frm1','post','testing.php');
> var test = new Frm({id:'frm1',method:'post',url:'testing.php'});
> which style that the prototypejs developer suggest us to use??

It's all about doing what makes more sense in your particular
situation : )
If your function needs more than 2-3 arguments, it's a good idea to
replace them with one object. Javascript's objects are unordered
collections, which makes them an ideal candidate for passing data in
*any* order:

someFunction({ foo: 1, bar: 2 });
// is identical in its effect to
someFunction({ bar: 2, foo: 1 });


someFunction(1, 2);
someFunction(2, 1);

could easily differ.

Some of prototype.js methods follow a pattern of having an optional
`options` parameter. This parameter is meant to be an object and is
usually the last one (as it makes it easy to omit it). `Ajax.Request`
is a good example.

In your particular case, try only leaving required data as actual
arguments and put the rest into an optional object:

var Frm = Class.create({
  options: {
    method: 'post'
  initialize: function(element, url, options) {
    this.element = $(element);
    if (!this.element) throw Error('element is required');
    this.url = url;
    id (!this.url) throw Error('url is required');
    this.options = Object.extend(
      options || { }
    // ...


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