Lybrary to check if the type of and format of the variables

typeof.js

//Created by Carlos (Coders.me)
//http://www.coders.me/web-html-js-css/javascript/libreria-de-validaciones-simples

function _IsInteger(str) {	if (typeof(str)=='undefined') { return false; } var expr = /^[+-]?[0-9]*$/; if (!expr.test(str)) return false; return true; }

function _IsNumber(str) { if (typeof(str)=='undefined') { return false; }	var expr1 = /^[+-]?[0-9]+(.[0-9]{0,})?$/; var expr2 = /^[+-]?(.[0-9]{0,})?$/; if (!expr1.test(str)){ if (!expr2.test(str)){ return false; } } return true; }

function _IsMoney(str) { if (typeof(str)=='undefined') { return false; }	var expr1 = /(?!^0*$)(?!^0*.0*$)^d{1,10}(.d{1,2})?$/; if (!expr1.test(str)){ return false; } return true; }

function _ValInMinMax(value,min,max) { if (!(_IsNumber(value))) { return false; } if ((!(_IsNumber(min))) || (!(_IsNumber(max)))) { return false; } if ((typeof(min)!='undefined') || (typeof(max)!='undefined')) { if ((typeof(min)!='undefined') && (typeof(max)!='undefined')) { if ((!isNaN(min)) && (!isNaN(max))) if (min>max) return false; } else { if (typeof(min)!='undefined') { if (!isNaN(min)) if (valuemax) return false; } } } return true; }

function _IsDate(date, mask, schar){ if (typeof(date)=='undefined'){ return false; } if (typeof(mask)=='undefined'){ mask = "ddmmyyyy"; } else { mask = mask.toLowerCase(); } if (typeof(schar)=='undefined'){ mask = '/'; } if ((!(_IsInteger(date.split(schar)[0]))) || (!(_IsInteger(date.split(schar)[1]))) || (!(_IsInteger(date.split(schar)[2])))){ return false; } var day, month, year; switch (mask){ case "ddmmyyyy": day = date.split(schar)[0]; month = date.split(schar)[1]; year = date.split(schar)[2]; break; case "mmddyyyy": day = date.split(schar)[1]; month = date.split(schar)[0]; year = date.split(schar)[2]; break; case "yyyyddmm": day = date.split(schar)[2]; month = date.split(schar)[0]; year = date.split(schar)[1]; break; default : return false; } if (!(_ValInMinMax(year,1900,2050))){ return false;} if (!(_ValInMinMax(month,1,12))){ return false;} if ((month==4) || (month==6) || (month==9) || (month==11)){ if (!(_ValInMinMax(day,1,30))){ return false;} }	if ((month==1) || (month==3) || (month==5) || (month==7) || (month==8) || (month==10) || (month==12)){ if (!(_ValInMinMax(day,1,31))){ return false;} } if (month==2){ if (!(new Date(year,1,29).getDate()==29)){ if (!(_ValInMinMax(day,1,28))){ return false;} } else { if (!(_ValInMinMax(day,1,29))){ return false;} } } return true; }

function _ValDateInMinMax(date, dmax, dmin, mask, schar){ if ((typeof(date)=='undefined') || (typeof(dmin)=='undefined') || (typeof(dmax)=='undefined')){ return false; } if ((!(_IsDate(date,mask,schar))) || (!(_IsDate(dmin,mask,schar)) || (!(_IsDate(dmax,mask,schar)))){ return false; } var day, month, year, minday, minmonth, minyear,maxday, maxmonth, maxyear; switch (mask){ case "ddmmyyyy": day = date.split(schar)[0]; month = date.split(schar)[1]; year = date.split(schar)[2]; minday = dmin.split(schar)[0]; minmonth = dmin.split(schar)[1]; minyear = dmin.split(schar)[2]; maxday = dmax.split(schar)[0]; maxmonth = dmax.split(schar)[1]; maxyear = dmax.split(schar)[2]; break; case "mmddyyyy": day = date.split(schar)[1]; month = date.split(schar)[0]; year = date.split(schar)[2]; minday = dmin.split(schar)[1]; minmonth = dmin.split(schar)[0]; minyear = dmin.split(schar)[2]; maxday = dmax.split(schar)[1]; maxmonth = dmax.split(schar)[0]; maxyear = dmax.split(schar)[2]; break; case "yyyyddmm": day = date.split(schar)[2]; month = date.split(schar)[0]; year = date.split(schar)[1]; minday = dmin.split(schar)[2]; minmonth = dmin.split(schar)[0]; minyear = dmin.split(schar)[1]; maxday = dmax.split(schar)[2]; maxmonth = dmax.split(schar)[0]; maxyear = dmax.split(schar)[1]; break; default : return false; } if ((!(year>=minyear)) || (!(year=minmonth)) || (!(month=minday)) || (!(day<=maxday))) { return false; } return true; }

function _TextInMin(str, min) { if ((typeof(str)=='undefined') || (typeof(min)=='undefined'))){ return false; } if ((!(str.length = max))) { return false; } return true; }

function _TextInMinMax(str, min, max) { if ((typeof(str)=='undefined') || (typeof(min)=='undefined') || (typeof(max)=='undefined')){ return false; } if ((!(str.length = max))) { return false; } return true; }

function _IsEmail(str) { if (typeof(str)=='undefined') { return false; }	var expr1 = /^([a-zA-Z0-9_-.]+)@([a-zA-Z0-9_-.]+).([a-zA-Z]{2,5})$/; if (!expr1.test(str)){ return false; } return true; }

function _IsEmailList(str, schar) { if (typeof(str)=='undefined') { return false; } if ((typeof(schar)=='undefined')){ schar = ","; } var array = str.split(schar); for (var email in array) { if (!(_IsEmail(email))){ return false;} } return true; }

function _IsRFC(str) { if ((typeof(schar)=='undefined')){ return false; } var expr1 = /^[A-Za-z]{4}[ |-]{0,1}[0-9]{6}[ |-]{0,1}[0-9A-Za-z]{3}$/; if (!expr1.test(str)){ return false; } return true; }