Here are 2 prototype-functions I created.

[Ultimater]

String.prototype.stripHTML=function(){
return this.replace(/\&/g,"\&amp;").replace(/\</g,"\&lt;").replace(/\gt/g,"\&gt;")
}

Converts "<b>hi</b>" into "&lt;b&gt;hi&lt;/b&gt;"

[BigMoosie]

BigMoosie, can you share the changes you made to it?

Its not quite efficient enough. But ill share how it scrolls the colors:

#FF0000
#FF00FF
#0000FF
#00FFFF
#00FF00
#FFFF00

But it also has a variable to control how light it gets.

[BigMoosie]

Date.prototype.NumberOfDays(); Origional: A1ien51

I was modifying the old version to maintain the old date when I started from scratch. As much as I like the old one for its novel approach, I prefer this as it is 10 times faster.

Date.prototype.NumberOfDays=function(){
	var a=this.getMonth();
	if (a==1) {
		var b=this.getFullYear();
		return (b%4==0 && (b%100!=0 || b%400==0)) ? 29 : 28;
	}
	return (a==3 || a==5 || a==8 || a==10) ? 30 : 31;
}

[HaganeNoKokoro]

Moosie, isn't the rule for leap years:

if(year%4==0 &&(!year%100==0 || year%400==0)) //then leap year

?

Source: http://www.timeanddate.com/date/leapyear.html

[BigMoosie]

Good point HaganeNoKokoro!

I knew that they occasionally make exceptions for leapyears but I didnt know there was a rule for it, I thought that chaos didnt allow for those kind of accurate predictions, it seems I was wrong. You can make that adjustment if you want. But for most cases it will not matter as it wont be effective in roughly a hundred years in both directions.

EDIT: made the correction anyway.

[BigMoosie]

Boolean.isTrue();

Boolean.prototype.isTrue=function(){return this;}

This may come in handy

[HaganeNoKokoro]

Wow, I've needed a function like this for so long...

[A1ien51]

Boolean.isTrue();

Boolean.prototype.isTrue=function(){return this;}

This may come in handy

I sure hope you are kidding!

[Ultimater]

Wow, I've needed a function like this for so long...

I think he's being sarcastic

BigMoosie, as A1ien51 points-out, the function doesn't do anything and it's a wasted function call.

Boolean.prototype.isTrue=function(){return this;}

A boolean is either true or false, so your function call might look like this:

alert(true.isTrue())//true
alert(false.isTrue())//false

Maybe you meant something like this:

Boolean.prototype.ifElse=function(){if(this==true)return arguments[0];else return argument[1]}

[HaganeNoKokoro]

I sure hope you are kidding!

Definitely kidding, and I'm pretty sure Moosie is too

[BigMoosie]

Maybe you meant something like this:

Boolean.prototype.ifElse=function(){if(this==true)return arguments[0];else return argument[1]}

Of course I'm being sarcastic fool! and I meant exactly what I wrote, even yours is a ridiculous waste of a function because it is equivalent to:

(myBoolean) ? "arg0" : "arg1";

[Ultimater]

Any Boolean prototype-function is a joke! -- even mine

I'm stumped on why JavaScript even has Boolean prototypes in the first place.

[scragar]

cos that way no-one complains about them not being there.

and anyway booleans are great.

[A1ien51]

here is two more date prototypes UK to US format and DaysBetween, I do not think I posted these.

<script type="text/javascript">

  Date.prototype.DaysBetween = function(){
    var intMilDay = 24 * 60 * 60 * 1000;
    var intMilDif = arguments[0] - this;
    var intDays = Math.floor(intMilDif/intMilDay);
    return intDays;
  }

  String.prototype.UKtoUSDate = function(){
    var arrDate = this.split("/");
    return new Date(arrDate[1] + "/" + arrDate[0] + "/" + arrDate[2]);
  }

  var d1 = new Date("06/10/2005");
  var d2 = new Date("06/13/2005");
  alert(d1.DaysBetween(d2));

  var dUK1 = ("10/06/2005").UKtoUSDate();
  var dUK2 = ("13/06/2005").UKtoUSDate();
  alert(dUK1.DaysBetween(dUK2));

</script>

[A1ien51]

Business Day Calcs, this method does not involve looping like I have seen people do.

Date.prototype.DaysBetweenBusiness = function(){
  //Does not account for holidays! LOL

  //return -1 if start or end date is not a business day
  if(!this.IsWeekDay() || !arguments[0].IsWeekDay())return -1
 
  var intMilDay = 24 * 60 * 60 * 1000;
  var intMilWeek = intMilDay * 7;
  var intSDay = this.getDay();
  var intEDay = arguments[0].getDay();
  this.setDate(this.getDate() + 7 - intSDay);
  arguments[0].setDate(arguments[0].getDate() - intEDay);
  var intMilDif = arguments[0] - this;
  var intDaysTotal = Math.floor(intMilDif/intMilDay);
  var intWeeks = Math.floor(intMilDif/intMilWeek);
  return xD = 5 - intSDay + intEDay + intDaysTotal -(intWeeks*2)
}

Date.prototype.IsWeekDay = function(){
  return this.getDay() > 0 && this.getDay() < 6
}

  var d1 = new Date("06/6/2005");
  var d2 = new Date("06/29/2005");
  alert(d1.DaysBetweenBusiness(d2));

Eric