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374 lines
10 KiB
374 lines
10 KiB
/*
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Validator v1.0.5
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(c) 2012 Yair Even Or <http://dropthebit.com>
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MIT-style license.
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*/
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var validator = (function(){
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var message, tests, checkField, validate, mark, unmark, field, minmax, defaults,
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validateWords, lengthRange, lengthLimit, pattern, alertTxt, data,
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email_illegalChars = /[\(\)\<\>\,\;\:\\\/\"\[\]]/,
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email_filter = /^.+@.+\..{2,3}$/;
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/* general text messages
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*/
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message = {
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invalid : 'invalid input',
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empty : 'please put something here',
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min : 'input is too short',
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max : 'input is too long',
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number_min : 'too low',
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number_max : 'too high',
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url : 'invalid URL',
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number : 'not a number',
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email : 'email address is invalid',
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email_repeat : 'emails do not match',
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password_repeat : 'passwords do not match',
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repeat : 'no match',
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complete : 'input is not complete',
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select : 'Please select an option'
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};
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// defaults
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defaults = { alerts:true };
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/* Tests for each type of field (including Select element)
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*/
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tests = {
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sameAsPlaceholder : function(a){
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return $.fn.placeholder && a.attr('placeholder') !== undefined && data.val == a.prop('placeholder');
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},
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hasValue : function(a){
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if( !a ){
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alertTxt = message.empty;
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return false;
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}
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return true;
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},
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// 'linked' is a special test case for inputs which their values should be equal to each other (ex. confirm email or retype password)
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linked : function(a,b){
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if( b != a ){
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alertTxt = message[data.type + '_repeat'] || message.no_match;
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return false;
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}
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return true;
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},
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email : function(a){
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if ( !email_filter.test( a ) || a.match( email_illegalChars ) ){
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alertTxt = a ? message.email : message.empty;
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return false;
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}
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return true;
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},
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text : function(a){
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// make sure there are at least X number of words, each at least 2 chars long.
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// for example 'john F kenedy' should be at least 2 words and will pass validation
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if( validateWords ){
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var words = a.split(' ');
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// iterrate on all the words
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var wordsLength = function(len){
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for( var w = words.length; w--; )
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if( words[w].length < len )
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return false;
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return true;
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};
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if( words.length < validateWords || !wordsLength(2) ){
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alertTxt = message.complete;
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return false;
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}
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return true;
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}
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if( a.length < lengthRange[0] ){
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alertTxt = message.min;
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return false;
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}
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// check if there is max length & field length is greater than the allowed
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if( lengthRange[1] && a.length > lengthRange[1] ){
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alertTxt = message.max;
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return false;
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}
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// check if the field's value should obey any length limits, and if so, make sure the length of the value is as specified
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if( lengthLimit.length ){
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var obeyLimit = false;
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while( lengthLimit.length ){
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if( lengthLimit.pop() == a.length )
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obeyLimit = true;
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}
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if( !obeyLimit ){
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alertTxt = message.complete;
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return false;
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}
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}
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if( pattern ){
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var regex;
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switch( pattern ){
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case 'alphanumeric' :
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regex = /^[a-z0-9]+$/i;
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break;
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case 'numeric' :
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regex = /^[0-9]+$/i;
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break;
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case 'phone' :
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regex = /^\+?([0-9]|[-|' '])+$/i;
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break;
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default :
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regex = pattern;
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}
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try{
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if( regex && !eval(regex).test(a) )
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return false;
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}
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catch(err){
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console.log(err, field, 'regex is invalid');
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return false;
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}
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}
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return true;
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},
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number : function(a){
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// if not not a number
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if( isNaN(parseFloat(a)) && !isFinite(a) ){
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alertTxt = message.number;
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return false;
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}
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// not enough numbers
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else if( a.length < lengthRange[0] ){
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alertTxt = message.min;
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return false;
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}
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// check if there is max length & field length is greater than the allowed
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else if( lengthRange[1] && a.length > lengthRange[1] ){
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alertTxt = message.max;
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return false;
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}
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else if( minmax[0] && (a|0) < minmax[0] ){
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alertTxt = message.number_min;
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return false;
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}
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else if( minmax[1] && (a|0) > minmax[1] ){
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alertTxt = message.number_max;
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return false;
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}
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return true;
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},
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// Date is validated in European format (day,month,year)
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date : function(a){
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var day, A = a.split(/[-./]/g), i;
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// if there is native HTML5 support:
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if( field[0].valueAsNumber )
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return true;
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for( i = A.length; i--; ){
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if( isNaN(parseFloat(a)) && !isFinite(a) )
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return false;
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}
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try{
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day = new Date(A[2], A[1]-1, A[0]);
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if( day.getMonth()+1 == A[1] && day.getDate() == A[0] )
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return day;
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return false;
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}
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catch(er){
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console.log('date test: ', err);
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return false;
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}
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},
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url : function(a){
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// minimalistic URL validation
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function testUrl(url){
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return /^(https?:\/\/)?([\w\d\-_]+\.+[A-Za-z]{2,})+\/?/.test( url );
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}
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if( !testUrl( a ) ){
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console.log(a);
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alertTxt = a ? message.url : message.empty;
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return false;
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}
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return true;
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},
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hidden : function(a){
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if( a.length < lengthRange[0] ){
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alertTxt = message.min;
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return false;
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}
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if( pattern ){
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var regex;
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if( pattern == 'alphanumeric' ){
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regex = /^[a-z0-9]+$/i;
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if( !regex.test(a) ){
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return false;
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}
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}
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}
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return true;
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},
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select : function(a){
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if( !tests.hasValue(a) ){
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alertTxt = message.select;
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return false;
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}
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return true;
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}
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};
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/* marks invalid fields
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*/
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mark = function(field, text){
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if( !text || !field || !field.length )
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return false;
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// check if not already marked as a 'bad' record and add the 'alert' object.
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// if already is marked as 'bad', then make sure the text is set again because i might change depending on validation
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var item = field.parents('.item'), warning;
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item.find('.alert').remove();
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if( defaults.alerts ){
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warning = $('<div>').addClass('alert').text( text );
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item.append( warning );
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}
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item.removeClass('bad');
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setTimeout(function(){
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item.addClass('bad');
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}, 0);
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};
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/* un-marks invalid fields
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*/
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unmark = function(field){
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if( !field || !field.length ){
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console.warn('no "field" argument, null or DOM object not found')
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return false;
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}
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field.parents('.item')
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.removeClass('bad')
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.find('.alert').animate({ marginLeft:32, opacity:0 }, 200, function(){
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$(this).remove();
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});
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};
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/* Checks a single form field by it's type and specific (custom) attributes
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*/
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function checkField(){
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field = $(this);
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// skip testing fields whom their type is not HIDDEN but they are HIDDEN via CSS.
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if( field[0].type !='hidden' && field.is(':hidden') )
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return true;
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field.data( 'valid',true ); // every field starts as 'valid=true' until proven otherwise
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field.data( 'type', field.attr('type') ); // every field starts as 'valid=true' until proven otherwise
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field.data( 'val', field[0].value.replace(/^\s+|\s+$/g, "") ); // cache the value of the field and trim it
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data = field.data(); // cache the custom data attributes. first removes the DATA because jQuery has an
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var v = data.val;
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// Check if there is a specific error message for that field, if not, use the default 'invalid' message
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alertTxt = message[field.prop('name')] || message.invalid;
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// SELECT / TEXTAREA nodes needs special treatment
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if( field[0].nodeName.toLowerCase() === "select" ){
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data.type = 'select';
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}
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if( field[0].nodeName.toLowerCase() === "textarea" ){
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data.type = 'text';
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}
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/* Gather Custom data attributes for specific validation:
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*/
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validateWords = data['validateWords'] || 0;
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lengthRange = data['validateLengthRange'] ? (data['validateLengthRange']+'').split(',') : [1];
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lengthLimit = data['validateLength'] ? (data['validateLength']+'').split(',') : false;
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minmax = data['validateMinmax'] ? (data['validateMinmax']+'').split(',') : ''; // for type 'number', defines the mininum and/or maximum for the value as a number.
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pattern = data['validatePattern'];
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/* Validate the field's value is different than the placeholder attribute (and attribute exists)
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* this is needed when fixing the placeholders for older browsers which does not support them.
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* in this case, make sure the "placeholder" jQuery plugin was even used before procceding
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*/
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if( tests.sameAsPlaceholder(field) ){
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alertTxt = msg.form.empty;
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data.valid = false;
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}
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// if this field is linked to another field (their values should be the same)
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if( data.validateLinked ){
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var linkedTo = data['validateLinked'].indexOf('#') == 0 ? $(data['validateLinked']) : $(':input[name=' + data['validateLinked'] + ']');
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data.valid = tests.linked( v, linkedTo.val() );
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}
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/* validate by type of field. use 'attr()' is preffered to get the actual value and not what the browsers sees for unsupported types.
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*/
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if( data.valid && (data.valid = tests.hasValue(v)) || data.type == 'select' )
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switch( data.type ){
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case 'email' :
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data.valid = tests.email(v);
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break;
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case 'text' :
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data.valid = tests.text(v);
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break;
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case 'tel' :
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pattern = pattern || 'phone';
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data.valid = tests.text(v);
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break;
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case 'password' :
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data.valid = tests.text(v);
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break;
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case 'number' :
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data.valid = tests.number(v);
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break;
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case 'date' :
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data.valid = tests.date(v);
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break;
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case 'url' :
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data.valid = tests.url(v);
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break;
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case 'select' :
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data.valid = tests.select(v);
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break;
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case 'hidden' :
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data.valid = tests.hidden(v);
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break;
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}
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if( field.hasClass('optional') && !data.val )
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data.valid = true;
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// mark / unmark the field, and set the general 'submit' flag accordingly
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if( data.valid )
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unmark( field );
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else{
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mark( field, alertTxt );
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submit = false;
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}
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return data.valid;
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}
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/* vaildates all the REQUIRED fields prior to submiting the form
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*/
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function checkAll( $form ){
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if( $form.length == 0 ){
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console.warn('element not found');
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return false;
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}
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var that = this,
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submit = true, // save the scope
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fieldsToCheck = $form.find(':input').filter('[required=required], .required, .optional').not('[disabled=disabled]');
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fieldsToCheck.each(function(){
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// use an AND operation, so if any of the fields returns 'false' then the submitted result will be also FALSE
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submit = submit * checkField.apply(this);
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});
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return !!submit; // casting the variable to make sure it's a boolean
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}
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return {
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defaults : defaults,
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checkField : checkField,
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checkAll : checkAll,
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mark : mark,
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unmark : unmark,
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message : message,
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tests : tests
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}
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})(); |