How is jQuery's data store functionning ?

Question

Hi

I recently asked a question related to jquery's datastore. http://stackoverflow.com/questions/999535/how-to-get-from-an-element-all-the-data-set-using-the-data-method

I want to better understand the datastore to see if I can fix my problem (data integrity).

I understand the idea of a "numerical pointer to a global hashtable" http://james.padolsey.com/javascript/element-datastorage/

But looking at the jquery source, I'm confused :

    data: function( key, value ){
 var parts = key.split(".");
 parts[1] = parts[1] ? "." + parts[1] : "";

 if ( value === undefined ) {
  var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);

  if ( data === undefined && this.length )
   data = jQuery.data( this[0], key );

  return data === undefined && parts[1] ?
   this.data( parts[0] ) :
   data;
 } else
  return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function(){
   jQuery.data( this, key, value );
  });
},

Why is it using triggerHandler/trigger ? Where can I "see" the data while developing ?

Olivier

Answer 1

partial answer : jQuery's data is to be found using jQuery.cache.