JavaScript Standard Library Revisited before ECMAScript 4th Edition

This JSL revision is more efficient, more powerful and more standard than precedent one but it doesn't support Internet Explorer 4. This choice shouldn't be a problem because IE4 is, finally, no more used by anyone ... but if I'm wrong, please update Your browser, I can't believe You're able to surf this Web 2.0 era!!! JSL 1.8+ Revision is compatible with Internet Explorer 5 or greater, Konqueror 3 or greater, FireFox 1 or greater, Safari 2 or greater, Opera 7 or greater and many other browsers too. JSL Revision goal is to have a quite totally standard ECMAScript 3rd Edition enviroment (where it's possible) to:

• write more with less code using native JavaScript 1.6 or greater prototypes with standard methods implementations
• write libraries without redundant common prototypes (Array.prototype.map, forEach ... and every other)
• make Internet Explorer 5 or greater more standard than ever (setTimeout or setInterval with extra arguments, XMLHttpRequest and much more)
• make DOM Collections compatible with Array prototypes too (example: Array.prototype.forEach.call(document.getElementsByTagName("*"), function(value){alert(value.innerHTML)}))
• develop JavaScript drived pages with a uniq global standard library to mantain, update or change instead of every personal not so standard implementation
• creates scripts that performs quickly with every standard browser but with every other less standard too
• write generic FireFox / Safari code without cross browser compatibility paranoia (JSL doesn't change native prototypes, just add them in old or unstandard browsers increasing automatically JavaScript compatibility)

JSL Revision Features

• Standard Global Scope - aka window
  • encodeURIComponent - the real method to send utf-8 compatible strings
  • decodeURIComponent - the real method to parse utf-8 encoded strings
  • setInterval - standard implementation, accept one or more callback arguments with Internet Explorer too
  • setTimeout - standard implementation, accept one or more callback arguments with Internet Explorer too
  • undefined - the real value, created only in browsers that doesn't support native undefined value
  • XMLHttpRequest - Internet Explorer XMLHttpRequest constructor (Yes, You can implements prototype methods too, it's a wrapper!)
• Unstandard Global Scope - aka window
  • execScript - the uniq unstandard global function compatible with every browser to truly evaluate code in a global scope (as Internet Explorer does)
• Array - compatible with every kind of iterable collection, HTML too
  • every - a method to know if every enumerable values pass a callback test
  • filter - a method to create a new array using a callback as filter
  • forEach - a method to do something with every iterable value using a callback
  • indexOf - a method to know if a collection contains a specific value
  • lastIndexOf - a method to know if a collection contains a specific value starting from last value
  • map - a method to create a duplicated array using a callback for each iterable element
  • pop - a method to return last collection element removing them from original collection
  • push - a method to add one or more values to a collection
  • shift - a method to remove and return first element from a collection
  • some - a method to know if at least one enumerable value pass a callback test
  • splice - a method to modify a collection returning specified values
  • unshift - a method to add one or more values at the begin of a collection
• Date - a bit more standard with Internet Explorer too
  • getYear - returns real method value instead of getFullYear
  • setYear - set year using a corect value instead of use them to set full year
• Function - real apply and call methods for Internet Explorer 5 too
  • apply - a method to use function itself with a different scope using a collection as second argument
  • call - a method to use function itself with a different scope accepting one or more specified arguments
• Number - most used prototypes to make old browsers more standard
  • toFixed - a method to create a perfect decimal Number rappresentation
• Object - hasOwnProperty for old browsers (IE5)
  • hasOwnProperty - a method to know if a property is defined as generic prototype or was assigned (not perfect but seems efficient). This method is really important expecially when You use a for in loop (example: for(var key in o){if(o.hasOwnProperty(key){do stuff})}) to make for in loops more safe for Your code too.
• String - JavaScript 1.6 or greater standard methods for every browser
  • lastIndexOf - a method to know last indexOf a generic string
  • replace - the real replace method, accept and call correctly function as second argument

About Object.prototype assigned only to Internet Explorer 5

• The hasOwnProperty method is the only one Object prototype I choosed to add. The reason is quite obvious, every developer should check if a for in loop is looking for 3rd parts Object prototypes (example: toJSONString). Without this method a for in loop should be really destructive but if You don't want them for IE5 too You should just delete them. Please remember that this prototype will be "a problem" only with Internet Explorer 5 because every other browser will support them natively and in this case JSL doesn't assign the prototype.

About Documentation

• You can read more about each prototype or global scope function direclty in Mozilla Developer Center.

Download JSL Revision

You can test JSL features in this demo page to know if Your browser is compatible. You can view or download JSL source code here (11.41 Kb) or You can use packed.it version ZIP File (12.82 Kb) that will produce a pre-compiled (runtime convertions free) page like this one (2.69 Kb) automatically. Please contact me if You'll find some bug in JSL Revision and please leave my credits inside JSL file, it's a MIT-Style licensed project. Thank You. If You want to add a comment please write them in JSL Revision official post (registration is not required).