[Prototype-core] Re: Unexpected behaviour when using $A(document.getElementsByTagName("script"))

[jdalton]

Hello Richard,

This is the source of $A:

var $A = Array.from = function(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0, length = iterable.length; i < length; i++)
      results.push(iterable[i]);
    return results;
  }
};

Please show me where it caches values.

If you mimic scriptaculous's loader you shouldn't be having an issue.
I have done so many times with no issues. I notice you use findAll()
instead of find().
Here are my working examples:

/* * * * * * * * * * * * * * * * * * *
*
*  Load Common Classes
*
* * * * * * * * * * * * * * * * * * */

(function(){

  var require = function(libraryName) {
    document.write('<script type="text/javascript" src="'+libraryName
+'"></script>');
  };

  var script =
$A(document.getElementsByTagName("script")).find( function(s){
    return (s.src && s.src.match(/common\.js(\?.*)?$/));
  });

  var path     = script.src.replace(/common\.js(\?.*)?$/,'');
  var includes = ['script1','script2','script3'];

  includes.each(function(include){
        require( path + include + '.js');
  });

})();

OR



/* * * * * * * * * * * * * * * * * * *
*
*  Controls (Singleton)
*
* * * * * * * * * * * * * * * * * * */

Controls = {

  require : function(libraryName) {
    document.write('<script type="text/javascript" src="'+libraryName
+'"></script>');
  },

  load : function(){

    var script =
$A(document.getElementsByTagName("script")).find( function(s){
      return (s.src && s.src.match(/controls\.js(\?.*)?$/));
    });

    var path     = script.src.replace(/controls\.js(\?.*)?$/,'');
    var includes = script.src.match(/\?.*load=([a-z,]*)/i);

    includes = (includes? includes[1] :
'control1,control2,control3').split(',');

    includes.each(function(include){
          Controls.require( path + include + '.js');
      });
  }
};

Controls.load();


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