Develop Reference

isset equivalent in javascript to find palindrome

I created a script in PHP to find a palindrome, but when I try to do the same in JavaScript, then it is not working as expected. It's not just a matter of checking if the string that is reversed matches, but any order of the string has to be checked as well.
In other words, "mom" should return as true, "mmo" should return as true, "omm" should return as true, etc..., which is what the PHP script does, but the JS script below doesn't even work for the first iteration for the string "mom"
The following is the PHP script:
<?php
function is_palindrom($str) {
$str_array = str_split($str);
$count = array();
foreach ($str_array as $key) {
if(isset($count[$key])) {
$count[$key]++;
} else {
$count[$key] = 1;
}
}
$odd_counter = 0;
foreach ($count as $key => $val) {
if(($val % 2) == 1) {
$odd_counter++;
}
}
return $odd_counter <= 1;
}
echo is_palindrom('mom') ? "true" : "false";
The following is what I have tried in JS:
var count = [];
var strArr = [];
var oddCounter = 0;
var foreach_1 = function(item, index) {
console.log("count[index]: " + count[index]);
if (typeof count[index] !== "undefined") {
count[index]++;
} else {
count[index] = 1;
}
};
var foreach_2 = function(item, index) {
console.log("item: " + item + " item % 2: " + eval(item % 2));
if (eval(item % 2) == 1) {
oddCounter++;
}
console.log("oddCounter: " + oddCounter);
return oddCounter <= 1;
};
var isPalindrom = function(str) {
strArr = str.split("");
console.log(strArr);
strArr.forEach(foreach_1);
console.log(count);
count.forEach(foreach_2);
};
I believe it is failing where I try to replicate isset in javascript, with the following code:
if (typeof count[index] !== "undefined") {
As a result, I have tried to write my own isset function, but still the same result, it is not working:
var isset = function(obj) {
if (typeof obj === "undefined" || obj === null) {
return false;
} else {
return true;
}
};
With the following function being called:
if (isset(count[index])) {
count[index]++;
} else {
count[index] = 1;
}
As usual, any help would be appreciated and thanks in advance
BTW, it's killing me that I cannot remember the word for several revisions or iterations of something - I know that it starts with "re"

My attempt:
let p1 = `No 'x' in Nixon.`
let p2 = `Was it a car or a cat I saw?`
let p3 = `A man, a plan, a canal, Panama!`
function is_palindrome (str) {
const normalize = str => str.replace(/[.,:;`'"!?\/#$%\^&\*{}=\-_~()\s]/g, '').toLowerCase()
const reverse = str => [...str].reverse().join('')
return normalize(str) === reverse(normalize(str))
? true
: false
}
console.log(is_palindrome(p1))
console.log(is_palindrome(p2))
console.log(is_palindrome(p3))

First, thank you for all the comments.
Second, I ran a var_dump on the count array in the PHP file and this was the result:
array (size=2)
'm' => int 2
'o' => int 1
Which lead me to understand that count in js has to be an object for this work and I would have to create indexes of the object, depending on the string entered.
One thing lead to another and a complete re-write, but it works, along with a spell checker - see link at the bottom for complete code:
var count = {};
var strArr = [];
var oddCounter = 0;
var objKeys = [];
var splitString;
var reverseArray;
var joinArray;
var url = "test-spelling.php";
var someRes = "";
var mForN = function(obj, strArr) {
for (var y = 0; y < strArr.length; y++) {
// console.log("obj[strArr[" + y + "]]: " + obj[strArr[y]]);
if (isset(obj[strArr[y]])) {
obj[strArr[y]]++;
} else {
obj[strArr[y]] = 1;
}
}
return obj;
};
var mForN_2 = function(obj, objKeys) {
for (var z = 0; z < objKeys.length; z++) {
/* console.log(
"obj[objKeys[z]]: " +
obj[objKeys[z]] +
" obj[objKeys[z]] % 2: " +
eval(obj[objKeys[z]] % 2)
); */
if (eval(obj[objKeys[z]] % 2) == 1) {
oddCounter++;
}
// console.log("oddCounter: " + oddCounter);
}
return oddCounter <= 1;
};
var isset = function(obj) {
if (typeof obj === "undefined" || obj === null) {
return false;
} else {
return true;
}
};
var isPalindrom = function(str) {
// reverse original string
splitString = str.split("");
reverseArray = splitString.reverse();
joinArray = reverseArray.join("");
var checking = checkSpellingOfStr(str);
if (str == joinArray) {
strArr = str.split("");
// console.log("strArr: " + strArr);
objKeys = makeObjKeys(count, strArr);
// console.log("filled count before mForN: " + JSON.stringify(count));
// create array of keys in the count object
objKeys = Object.keys(count);
// console.log("objKeys: " + objKeys);
count = mForN(count, strArr);
// console.log("count after mForN: " + JSON.stringify(count));
return mForN_2(count, objKeys);
} else {
return 0;
}
};
var makeObjKeys = function(obj, arr) {
for (var x = 0; x < arr.length; x++) {
obj[arr[x]] = null;
}
return obj;
};
var checkSpellingOfStr = function(someStr) {
var formData = {
someWord: someStr
};
$.ajax({
type: "GET",
url: url,
data: formData,
success: function(result) {
if (!$.trim(result)) {
} else {
console.log(result);
$("#checkSpelling").html(result);
}
}
});
};
Start everything with the following call:
isPalindrom("mom") ? demoP.innerHTML = "is pal" : demoP.innerHTML = "is not pal";
In my example, I have a form and I listen for a button click as follows:
var palindromeTxt = document.getElementById("palindromeTxt").value;
var btn = document.getElementById("button");
btn.addEventListener("click", function (event) {
isPalindrom(palindromeTxt) ? demoP.innerHTML = "is pal" : demoP.innerHTML = "is not pal";
});
The following is the php for spell check:
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
if(!empty($_REQUEST['someWord']))
{
$someWord = $_REQUEST['someWord'];
}
$pspell_link = pspell_new("en");
if (pspell_check($pspell_link, $someWord)) {
echo trim($someWord) . " is a recognized word in the English language";
} else {
echo "Your word is either misspelled or that is not a recognized word";
}
You will need pspell installed on your server, as well as adding extension=pspell.so to your php.ini
This is what I did, to get it running locally on my mac:
cd /Users/username/Downloads/php-5.6.2/ext/pspell
/usr/local/bin/phpize
./configure --with-php-config=/usr/local/php5-5.6.2-20141102-094039/bin/php-config --with-pspell=/opt/local/
make
cp ./modules/* /usr/local/php5-5.6.2-20141102-094039/lib/php/extensions/no-debug-non-zts-20131226
sudo apachectl restart
check your phpinfo file and you should see the following:
pspell
PSpell Support enabled
Live example

How can I uppercase names with a dash -, apostrophe ' or space?

I have the following code which works well to convert data entered into the "Firstname" field in our data enrollment software application to uppercase and return the converted value back to the application.
However, it doesn't handle names with "-", "'" or spaces in them, for example Anne-Marie, Jean Jacques, O’Brian. Could someone please help me in adding a few lines of code to handle these name types as well as preserving my original code which works for standard names without these characters in? Here is my code.
var tc_event = changeValue();
function changeValue() {
// Parse the JSON string for script information.
var tcInfo = JSON.parse(TC_Info);
/* FROM ENGINEERING: The “TC_Info” variable contains the user id and IP address of the user running the script.
* We have at least one customer that wanted that information */
var userId = tcInfo.userId;
var ipAddress = tcInfo.ipAddress;
// Parse the JSON string for fields and properties.
var tcData = JSON.parse(TC_Event);
// The following several lines of code loops over the workflow fields passed in to the script and saves references to the fields named “Lastname” and “LastnameUppercase”
var Lastname, LastnameUppercase, Firstname, Firstname1stUppercase;
// Iterate through parsed JSON.
for (var index in tcData) {
// Fetch each field i.e each key/value pair.
var field = tcData[index];
// Find the fields to process.
if (field.name === 'Lastname') {
Lastname = field;
} else if (field.name === 'LastnameUppercase') {
LastnameUppercase = field;
} else if (field.name === 'Firstname') {
Firstname = field;
} else if (field.name === 'Firstname1stUppercase') {
Firstname1stUppercase = field;
} else if (field.name === 'PersNr') {
PersNr = field;
} else if (field.name === 'TikNr') {
TikNr = field;
}
}
// Were the fields found? If so, proceed.
if (Lastname && LastnameUppercase && Firstname && Firstname1stUppercase && PersNr && TikNr) {
// This line of code states the LastnameUppercase field value will be the Lastname field value in uppercase
LastnameUppercase.value = Lastname.value.toUpperCase();
Firstname1stUppercase.value = Firstname.value.charAt(0).toUpperCase() + Firstname.value.slice(1);
var strLtr = PersNr.value.substring(0, 2);
var strNum = PersNr.value.substring(2, 6);
if (strLtr === '00') {
strLtr = 'A';
} else if (strLtr === '01') {
strLtr = 'M';
} else if (strLtr === '31') {
strLtr = 'B';
} else if (strLtr === '71') {
strLtr = 'F';
}
TikNr.value = strLtr + strNum;
}
// Return the updated fields and properties.
return JSON.stringify(tcData);
}

This will capitalize both the firstName that do not contain symbols and the ones that do:
function capitalize(name) {
let capitalizedName = '';
const nameSplit = name.split(/\W/g);
const symbols = name.match(/\W/g);
for(let i = 0; i< nameSplit.length; i++) {
capitalizedName += nameSplit[i][0].toUpperCase() +
nameSplit[i].slice(1)
if(i < nameSplit.length -1) capitalizedName += symbols[i];
}
return capitalizedName
}

I have used this function successfully:
function capitalizeName(str) {
var result = str.replace(/\w\S*/g, function(txt) { return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase(); });
return result.replace(/\s\s+/g, ' ');
}
calling the function:
capitalName = capitalizeName(lowerCaseName)

Looks like you should change
Firstname1stUppercase.value = Firstname.value.charAt(0).toUpperCase() + Firstname.value.slice(1);
to
var delimiter = ''; //char value
if(Firstname.value.indexOf(' ') != -1){ //name has a space
delimiter = ' ';
}else if(Firstname.value.indexOf('-') != -1){ //name has -
delimiter = '-';
}else if(Firstname.value.indexOf('\'') != -1){ //name has a '
delimiter = '\'';
}
Firstname1stUppercase.value = Firstname.split(delimeter).map(function(val) {
return val.charAt(0).toUpperCase() + val.slice(1);
}).join(delimeter);
The last line is what you were doing but written for any separating character be it a space, apostrophe, or hyphen.

You could split by non alphabetic letters, like this:
text.split(/[^A-Za-z]/);
inspired from here: Split string by non-alphabetic characters
Now, let's implement the function you need:
function myUpperCase(input) {
var parts = input.split(/[^A-Za-z]/);
var output = parts[0];
for (var i = 1; i < parts.length; i++) {
if (parts[i].length) parts[i] = parts[i][0].toUpperCase() + parts[i].substring(1);
output += input[output.length] + parts[i];
}
return output;
}

Replace last letters in array of strings Javascript

I need to do as follows:
I've got an array of strings containing last names. Some of them ends with letter 'i'.
manLastNames = ["testowski","bucz","idzikowski","gosz"];
I need to make a function which will iterate over this array of strings and if there is an element ending with 'i', I need to replace this 'i' for 'a', otherwise just leave string as it is.
At the end I want to have another array where all last 'i's are replaced with 'a's.
womanLastNames = ["testowska","bucz","idzikowska","gosz"];
This is what I have now, but Im pretty sure that it start being crap at some point
var rep = function() {
var manLastNames = ["testowski","bucz","idzkowski","gosz"];
var womanLastNames = new Array(4);
for (var i=0; i<manLastNames.length; i++) {
var lastName = manLastNames[i];
if (lastName.substr(lastName.length - 1, 1) == 'i') {
lastName = lastName.substr(0, lastName.length - 1) + 'a';
}
}
for (var i=0; i<womanLastNames.length; i++) {
womanLastNames[i] = lastName[i];
}
console.log(womanLastNames);
}
rep();

Try the code:
var manNames = ["testowski","bucz","idzkowski","gosz"];
var womanNames = manNames.map(function(name) {
return name.endsWith("i") ? name.slice(0, -1) + "a" : name;
});
console.log(womanNames)
If your interpreter supports ES6, the following is equivalent:
names.map((name)=>name.endsWith("i") ? name.slice(0, -1) + "a" : name)

Here is solution
var rep = function() {
var manLastNames = ["testowski","bucz","idzkowski","gosz"];
var womanLastNames =[];
for (var i=0; i<manLastNames.length; i++) {
var lastName = manLastNames[i];
if (lastName.charAt(lastName.length - 1) == 'i') {
lastName = lastName.substr(0, lastName.length - 1) + 'a';
}
womanLastNames.push(lastName);
}
console.log(womanLastNames);
}
rep();
Another solution is to use .map method like this, using a callback function:
var manLastNames = ["testowski","bucz","idzikowski","gosz"];
function mapNames(item){
return item[item.length-1]=='i' ? item.substr(0, item.length-1) + "a" : item;
}
console.log(manLastNames.map(mapNames));

Depending on how efficient you need to be, you can use regular expressions to do both tasks:
var new_name = name.replace(/i$/, 'a');
will replace the last "i" in a string with "a" if it exists
var new_name = name.replace(/i/g, 'a');
will replace all "i"s in a string with "a".
var names = ["testowski", "bucz", "idzkowski", "gosz"];
console.log("original", names);
var last_i_replaced = names.map(function(name) {
return name.replace(/i$/, 'a');
});
console.log("last 'i' replaced", last_i_replaced);
var all_i_replaced = names.map(function(name) {
return name.replace(/i/g, 'a');
});
console.log("all 'i's replaced", all_i_replaced);

This should work:
var rep = function() {
var manLastNames = ["testowski","bucz","idzkowski","gosz"];
var womanLastNames = manLastNames;
for(var i=0; i<manLastNames.length;i++){
if(manLastNames[i].charAt(manLastNames[i].length-1)=='i'){
womanLastNames[i]=manLastNames[i].substr(0,womanLastNames[i].length-1)+'a';
}
}
console.log(womanLastNames);
}
rep();

Here is another solution
var manLastNames = ["testowski","bucz","idzkowski","gosz"];
var womanLastNames = []
manLastNames.forEach(x => {
if (x.charAt(x.length-1) === "i") womanLastNames.push(x.slice(0,-1).concat("a"));
else womanLastNames.push(x);
});
console.log(womanLastNames);

Javascript Callback in for Loop

My problem is that I'm having a Function A which calls at one point another function, let's call it Function B (getChildContent) and needs the return value of Function B in order to proceed. I know that it's because of Javascripts Asynchronous Nature, and i tried to solve it with a callback. But i can't get it work properly.
FunctionA(){
//some Code.....
else {
for(i in clustertitles) {
if(S(text).contains(clustertitles[i])) {
var parent = {};
parent.ClusterName = clustertitles[i];
parent.Functions = [];
var str = '== ' + clustertitles[i] + ' ==\n* ';
str = S(text).between(str,'.').s;
var caps = parseFunctions(str);
for(y in caps) {
//var content = getChildContent(caps[y]);
getChildContent(caps[y], function(content) { //Function call
var child = {};
child.FunctionName = caps[y];
child.Content = [];
child.Content.push(content);
parent.Functions.push(child);
console.log(content);
});
}}}
}
function getChildContent (capname, callback) {
t = capname.replace(' ', '_');
bot.page(t).complete(function (title, text, date) {
var str = S(text).between('== Kurzbeschreibung ==\n* ', '.').s;
if(str === undefined || str === null || str === '') {
throw new Error('Undefined, Null or Empty!');
}
else {
var content = {};
str = parseTitles(str);
content.Owner = str[0];
content.Aim = str[1];
content.What = str[2];
content.Who = str[3];
content.Steps = str[4];
content.Page = 'some URL';
callback(content);
}
});
}
So in Function A I'm trying to call getChildContent from a for-Loop and pass the current string from caps-array. For each String in caps-array getChildContent() makes a http request over a node.js module and retrieves a string. With this string i'm building an object (content) which is needed in Function A to continue. However the 'console.log(content)' in Function A just prints out the object which is created with the last string in caps-array, but for many times. E.G. if caps-array has 5 entries, i get 5 times the object which is created with the last entry of caps-array.
How can i manage the loop/callback to get every time the right object on my console?

Your loop should call another function that preserves the value of y, something like this:
FunctionA(){
//some Code.....
else {
for(i in clustertitles) {
if(S(text).contains(clustertitles[i])) {
var parent = {};
parent.ClusterName = clustertitles[i];
parent.Functions = [];
var str = '== ' + clustertitles[i] + ' ==\n* ';
str = S(text).between(str,'.').s;
var caps = parseFunctions(str);
for(y in caps) {
yourNewFunction (y, caps, parent);
}}}
}
function yourNewFunction (y, caps, parent) {
getChildContent(caps[y], function(content) { //Function call
var child = {};
child.FunctionName = caps[y];
child.Content = [];
child.Content.push(content);
parent.Functions.push(child);
console.log(content);
});
}
function getChildContent (capname, callback) {
t = capname.replace(' ', '_');
bot.page(t).complete(function (title, text, date) {
var str = S(text).between('== Kurzbeschreibung ==\n* ', '.').s;
if(str === undefined || str === null || str === '') {
throw new Error('Undefined, Null or Empty!');
}
else {
var content = {};
str = parseTitles(str);
content.Owner = str[0];
content.Aim = str[1];
content.What = str[2];
content.Who = str[3];
content.Steps = str[4];
content.Page = 'some URL';
callback(content);
}
});
}

There are 2 ways to do so.
Put the loop inside a function, execute your callback after the loop is done. (Problematic if you are doing async call inside the loop.
function doLoopdiloopStuff() {
for() {
}
callback();
}
The other way, the way i prefer looks like this:
for(var i = 0; i < stuff || function(){ /* here's the callback */ }(), false; i++) {
/* do your loop-di-loop */
}
In another example:
for (var index = 0; index < caps.length || function(){ callbackFunction(); /* This is the callback you are calling */ return false;}(); index++) {
var element = caps[index];
// here comes the code of what you want to do with a single element
}

Splitting a string only when the delimeter is not enclosed in quotation marks

I need to write a split function in JavaScript that splits a string into an array, on a comma...but the comma must not be enclosed in quotation marks (' and ").
Here are three examples and how the result (an array) should be:
"peanut, butter, jelly"
-> ["peanut", "butter", "jelly"]
"peanut, 'butter, bread', 'jelly'"
-> ["peanut", "butter, bread", "jelly"]
'peanut, "butter, bread", "jelly"'
-> ["peanut", 'butter, bread', "jelly"]
The reason I cannot use JavaScript's split method is because it also splits when the delimiter is enclosed in quotation marks.
How can I accomplish this, maybe with a regular expression ?
As regards the context, I will be using this to split the arguments passed from the third element of the third argument passed to the function you create when extending the jQuery's $.expr[':']. Normally, the name given to this parameter is called meta, which is an array that contains certain info about the filter.
Anyways, the third element of this array is a string which contains the parameters that are passed with the filter; and since the parameters in a string format, I need to be able to split them correctly for parsing.

What you are asking for is essentially a Javascript CSV parser. Do a Google search on "Javascript CSV Parser" and you'll get lots of hits, many with complete scripts. See also Javascript code to parse CSV data

Well, I already have a jackhammer of a solution written (general code written for something else), so just for kicks . . .
function Lexer () {
this.setIndex = false;
this.useNew = false;
for (var i = 0; i < arguments.length; ++i) {
var arg = arguments [i];
if (arg === Lexer.USE_NEW) {
this.useNew = true;
}
else if (arg === Lexer.SET_INDEX) {
this.setIndex = Lexer.DEFAULT_INDEX;
}
else if (arg instanceof Lexer.SET_INDEX) {
this.setIndex = arg.indexProp;
}
}
this.rules = [];
this.errorLexeme = null;
}
Lexer.NULL_LEXEME = {};
Lexer.ERROR_LEXEME = {
toString: function () {
return "[object Lexer.ERROR_LEXEME]";
}
};
Lexer.DEFAULT_INDEX = "index";
Lexer.USE_NEW = {};
Lexer.SET_INDEX = function (indexProp) {
if ( !(this instanceof arguments.callee)) {
return new arguments.callee.apply (this, arguments);
}
if (indexProp === undefined) {
indexProp = Lexer.DEFAULT_INDEX;
}
this.indexProp = indexProp;
};
(function () {
var New = (function () {
var fs = [];
return function () {
var f = fs [arguments.length];
if (f) {
return f.apply (this, arguments);
}
var argStrs = [];
for (var i = 0; i < arguments.length; ++i) {
argStrs.push ("a[" + i + "]");
}
f = new Function ("var a=arguments;return new this(" + argStrs.join () + ");");
if (arguments.length < 100) {
fs [arguments.length] = f;
}
return f.apply (this, arguments);
};
}) ();
var flagMap = [
["global", "g"]
, ["ignoreCase", "i"]
, ["multiline", "m"]
, ["sticky", "y"]
];
function getFlags (regex) {
var flags = "";
for (var i = 0; i < flagMap.length; ++i) {
if (regex [flagMap [i] [0]]) {
flags += flagMap [i] [1];
}
}
return flags;
}
function not (x) {
return function (y) {
return x !== y;
};
}
function Rule (regex, lexeme) {
if (!regex.global) {
var flags = "g" + getFlags (regex);
regex = new RegExp (regex.source, flags);
}
this.regex = regex;
this.lexeme = lexeme;
}
Lexer.prototype = {
constructor: Lexer
, addRule: function (regex, lexeme) {
var rule = new Rule (regex, lexeme);
this.rules.push (rule);
}
, setErrorLexeme: function (lexeme) {
this.errorLexeme = lexeme;
}
, runLexeme: function (lexeme, exec) {
if (typeof lexeme !== "function") {
return lexeme;
}
var args = exec.concat (exec.index, exec.input);
if (this.useNew) {
return New.apply (lexeme, args);
}
return lexeme.apply (null, args);
}
, lex: function (str) {
var index = 0;
var lexemes = [];
if (this.setIndex) {
lexemes.push = function () {
for (var i = 0; i < arguments.length; ++i) {
if (arguments [i]) {
arguments [i] [this.setIndex] = index;
}
}
return Array.prototype.push.apply (this, arguments);
};
}
while (index < str.length) {
var bestExec = null;
var bestRule = null;
for (var i = 0; i < this.rules.length; ++i) {
var rule = this.rules [i];
rule.regex.lastIndex = index;
var exec = rule.regex.exec (str);
if (exec) {
var doUpdate = !bestExec
|| (exec.index < bestExec.index)
|| (exec.index === bestExec.index && exec [0].length > bestExec [0].length)
;
if (doUpdate) {
bestExec = exec;
bestRule = rule;
}
}
}
if (!bestExec) {
if (this.errorLexeme) {
lexemes.push (this.errorLexeme);
return lexemes.filter (not (Lexer.NULL_LEXEME));
}
++index;
}
else {
if (this.errorLexeme && index !== bestExec.index) {
lexemes.push (this.errorLexeme);
}
var lexeme = this.runLexeme (bestRule.lexeme, bestExec);
lexemes.push (lexeme);
}
index = bestRule.regex.lastIndex;
}
return lexemes.filter (not (Lexer.NULL_LEXEME));
}
};
}) ();
if (!Array.prototype.filter) {
Array.prototype.filter = function (fun) {
var len = this.length >>> 0;
var res = [];
var thisp = arguments [1];
for (var i = 0; i < len; ++i) {
if (i in this) {
var val = this [i];
if (fun.call (thisp, val, i, this)) {
res.push (val);
}
}
}
return res;
};
}
Now to use the code for your problem:
function trim (str) {
str = str.replace (/^\s+/, "");
str = str.replace (/\s+$/, "");
return str;
}
var splitter = new Lexer ();
splitter.setErrorLexeme (Lexer.ERROR_LEXEME);
splitter.addRule (/[^,"]*"[^"]*"[^,"]*/g, trim);
splitter.addRule (/[^,']*'[^']*'[^,']*/g, trim);
splitter.addRule (/[^,"']+/g, trim);
splitter.addRule (/,/g, Lexer.NULL_LEXEME);
var strs = [
"peanut, butter, jelly"
, "peanut, 'butter, bread', 'jelly'"
, 'peanut, "butter, bread", "jelly"'
];
// NOTE: I'm lazy here, so I'm using Array.prototype.map,
// which isn't supported in all browsers.
var splitStrs = strs.map (function (str) {
return splitter.lex (str);
});

var str = 'text, foo, "haha, dude", bar';
var fragments = str.match(/[a-z]+|(['"]).*?\1/g);
Even better (supports escaped " or ' inside the strings):
var str = 'text_123 space, foo, "text, here\", dude", bar, \'one, two\', blob';
var fragments = str.match(/[^"', ][^"',]+[^"', ]|(["'])(?:[^\1\\\\]|\\\\.)*\1/g);
// Result:
0: text_123 space
1: foo
2: "text, here\", dude"
3: bar
4: 'one, two'
5: blob

If you can control the input to enforce that the string will be enclosed in double-quotes " and that all elements withing the string will be enclosed in single-quotes ', and that no element can CONTAIN a single-quote, then you can split on , '. If you CAN'T control the input, then using a regular expression to sort/filter/split the input would be about as useful as using a regular expression to match against xhtml (see: RegEx match open tags except XHTML self-contained tags)