Luiz Paulo

var number = "123456348965";
var integerNumber = parseInt(number);
alert(integerNumber); //123456348965

var number = "010";
var integerNumber = parseInt(number);
alert(integerNumber); //8

var number = "010";
var integerNumber = parseInt(number, 10); //10 = base decimal
alert(integerNumber); //10

//trim completo
	function trim(str) {
		return str.replace(/^\s+|\s+$/g,"");
	}
 
	//left trim
	function ltrim(str) {
		return str.replace(/^\s+/,"");
	}
 
	//right trim
	function rtrim(str) {
		return str.replace(/\s+$/,"");
	}
 
	alert(trim("           TEXTO          "));

	//trim completo
	String.prototype.trim = function () {
		return this.replace(/^\s+|\s+$/g,"");
	}
 
	//left trim
	String.prototype.ltrim = function () {
		return this.replace(/^\s+/,"");
	}
 
	//right trim
	String.prototype.rtrim = function () {
		return this.replace(/\s+$/,"");
	}
	alert("           TEXTO          ".trim());

	function trim (str)
	{
		var whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';
		for (var i = 0; i < str.length; i++) 		{ 			if (whitespace.indexOf(str.charAt(i)) == -1) 			{ 				str = str.substring(i); 				break; 			} 		} 		for (i = str.length - 1; i >= 0; i--)
		{
			if (whitespace.indexOf(str.charAt(i)) == -1)
			{
				str = str.substring(0, i + 1);
				break;
			}
		}
	    return whitespace.indexOf(str.charAt(0)) == -1 ? str : '';
	}

	function isWhitespace(charToCheck) {
		var whitespaceChars = " \t\n\r\f";
		return (whitespaceChars.indexOf(charToCheck) != -1);
	}
 
	//left trim
	function ltrim(str) {
		for(var k = 0; k < str.length && isWhitespace(str.charAt(k)); k++); 		return str.substring(k, str.length); 	} 	//right trim 	function rtrim(str) { 		for(var j=str.length-1; j>=0 && isWhitespace(str.charAt(j)) ; j--) ;
		return str.substring(0,j+1);
	}
 
	//trim completo
	function trim(str) {
		return ltrim(rtrim(str));
	}

function daysInMonth(month,year) {
	var m = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
	if (month != 2) return m[month - 1];
	if (year % 4 != 0) return m[1];
	if (year % 100 == 0 && year%400 != 0) return m[1];
 
	return m[1] + 1;
}

function daysInMonth(month,year) {
	var dd = new Date(year, month, 0);
	return dd.getDate();
}

var lastDay = (new Date(year, month, 0)).getDate();

function getLastDayOfMonth(month,year)
{
	var day;
 
	switch(month)
	{
		case 1 :
		case 3 :
		case 5 :
		case 7 :
		case 8 :
		case 10:
		case 12:
			day = 31;
			break;
		case 4 :
		case 6 :
		case 9 :
		case 11:
		   	day = 30;
			break;
		case 2 :
			if( ( (year % 4 == 0) && ( year % 100 != 0) ) || (year % 400 == 0) )
				day = 29;
			else
				day = 28;
			break;
 
	}
	return day;
}

function anoBissexto(anoCompleto) 
{
	if(!(anoCompleto%4) && (anoCompleto%100 || !(anoCompleto%400))) return true;
	return false;
}
function diasNoMes(mes,ano)
{
	var var_type=typeof mes;
	if(var_type != "number" && var_type != "string") return false;
	if(var_type == "number" && (mes > 11 || mes < 0) && !isInt(mes)) return false;
	var eng_args_allowed = "january-february-march-april-may-june-july-august-september-october-november-december";
	var bra_args_allowed = "janeiro-fevereiro-marçomarco-abril-maio-junho-julho-agosto-setembro-outubro-novembro-dezembro";
	var vet_eng_args_allowed = eng_args_allowed.split("-");
	var vet_bra_args_allowed = bra_args_allowed.split("-");
	var datahj = new Date();
	var anohj = datahj.getFullYear();
	var dias = [31,anoBissexto(ano)?29:28,31,30,31,30,31,31,30,31,30,31];
 
	if(var_type == "string")
	{
		indice_eng = keyPosMatch(vet_eng_args_allowed,mes);
		indice_bra = keyPosMatch(vet_bra_args_allowed,mes);
		if(indice_eng>=0) return dias[indice_eng];
		if(indice_bra>=0) return dias[indice_bra];
		return false;
	}
	else return dias[mes];
}