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Counting a particular word in a string using Zapier code

I use Zapier to automate many of our business functions, which is great, but I got stuck trying to count the number of arrays or, if you like, a particular word pattern that comes from a string. I can tidy up the string with Zapier formatter, but cannot figure out how to carry out a count.
Here is an example of a tidied string where " have been removed:
[{Name:Jon,Surname:Smith},{Name:David,Surname:Michael},{Name:Sam,Surname:Fields},{Name:Katy,Surname:Milnes}]
In this instance I would want the count on say "Name" to return 4.
I have looked at different code examples for counting words but cannot execute them correctly in the code action of Zapier. This is probably really straight forward but I do not come from a coding background so a simple Java (or Python) script to drop into the Zapier code action or some pointers on how to solve this would be greatly appreciated.
Thanks

What are you really trying to achieve by trying to count the word?
Do you just want to know the number of objects the array contains? If that is the case something like this would work. Assuming that the array is in your inputData for the code step.
var data = JSON.stringify([{'Name':'Jon', 'Surname':'Smith'},{'Name':'David','Surname':'Michael'},{'Name':'Sam','Surname':'Fields'},{'Name':'Katy','Surname':'Milnes'}]);
var inputData = {objArr: data};
// Do not insert the above lines in your code step.
// Set the objArr to your array in the inputData step.
var parsedObjArr = JSON.parse(inputData.objArr);
// Skip the above step if the array is not in the inputData object.
var arrLen = parsedObjArr.length
console.log('Array Length: ', arrLen);
// The line below outputs data from the code step.
output = {arrLen}
Also note, you do not need to remove the quotes from the JSON string.
If the array is not in the inputData of the code step, you can just directly use the length method on the array.

Well in Python you can convert the json string into dictionary with key as the name. Length of dictionary is what you are looking for. Here is the example:
import json
from collections import defaultdict
d=defaultdict(list)
x=json.dumps([{'Name':'Jon', 'Surname':'Smith'},{'Name':'David','Surname':'Michael'},{'Name':'Sam','Surname':'Fields'},{'Name':'Katy','Surname':'Milnes'}])
json_string=json.loads(x)
for obj in json_string:
if(obj['Name'] in d):
d[obj['Name']].append([obj['Name']+' '+obj['Surname']])
else:
d[obj['Name']]=[obj['Name']+' '+obj['Surname']]
print(len(d))

How can I treat an imported value like an array?

I'm trying to generate a google form that has a few hundred options in a drop down.
I have all the name values in a single cell formatted as follows:
'user1','user2','user3'
It is set as in the code as follows:
var studentNames = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
When I use this variable as shown below it treats it all as a singe value instead of an array.
.setChoiceValues([studentNames])
Any help in where to go from here?

is it a string of words with single quotes and a comma to separate them? if so, you can just do a split on the comma
var s = data
var arr = s.split(",");
and now you will have an array of strings. not sure if this answers your question.

Thanks everyone for getting me pointed in the right direction.
Turns out split was just part of the answer, I had to turn it into a string first.
.toString().split(",");

getValues() returns an object, so you need to interact with it to get the string of values for your array.
Given you are selecting just one cell and so don't need to iterate through the object, try something like this:
var studentNamesObj = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
var studentNames = studentNamesObj[0][0].split(",");

matching content of a file

I´m having a problem with a javascript function.
The idea is read the content of a file with javascript. Everything is working ok, I can see the content of the file, just now I want to organize the content.
And what I meant with organize is:
My file have a lot of strings, for example: tel#01234567#tel tel#01456789#tel dept#level1#dept dept#level4#dept.....
And everything is a line of strings, and at the end is that all what I see...
My goal is, when I read the file, at the end it have to show something like this:
Tel: 01234567
01456789
Dept: Level1
Level2
There is a way to have something like that?
function loaded(evt)
{
// Obtain the read file data
var fileString = evt.target.result;
document.getElementById('output').innerHTML = fileString;
}

So basically your file has attributes and data for the respective attribute surrounded by the attribute name + #?
The easiest thing would be to have the file in a common format for data, e.q. JSON. Then you could just use the attributes from the object you get by JSON.parse();
However, if you cannot change the file structure you will have to programm something that splits your string into the desired parts and creates an object out of the attributes to work with.
For the string you presented you could do one string.split(" ") to get every attribute singled out, resulting in an array like this:
Array [ "tel#01234567#tel", "tel#01456789#tel", "dept#level1#dept", "dept#level4#dept" ]
Afterwards you can iterate over the array and string.split("#") again for each element which gives you this:
array[0].split("#");
Array [ "tel", "01234567", "tel" ]
Then you can use the first index of the array as attribute name and the second one as its data. You could put that into an object and afterwards refer from the attribute straight to the data:
var string = "tel#01234567#tel tel#01456789#tel dept#level1#dept dept#level4#dept";
var array = string.split(" ");
var dataObject = {};
for(var i in array){
var element = array[i].split("#");
if(dataObject.hasOwnProperty(element[0])){
dataObject[element[0]].push(element[1]);
}else{
dataObject[element[0]] = [element[1]];
}
}
In the end you have an object that has all the attributes as its properties and the corresponding data stored in an array for each property. With that you should be able to work right? :)

When you read the file in you could use JS split to separate the content based on the delimiters.
Check it out here: http://www.w3schools.com/jsref/jsref_split.asp

Show Json Object In TextBox

I have json returned from Database.I want to pick only one object Value and show it in the textbox. Here is my json.
[{
"ErrorMessage":"",
"ID":294,
"ExpenseID":0,
"EffectiveDate":"/Date(1262284200000)/",
"FormattedEffectiveDate":"01-01-2010",
"Perunit":null,
"VATRate":17.5,
"ChangedByID":1,
"ChangedByName":"superuser, superuser",
"Expense":null,
"ErrorSummary":null,
"ErrorList":[]
}]
I have Tried
var Jsoninvoice = JSON.stringify(data)
alert(Jsoninvoice.VATRate) and also alert(data.VATRate)
Thank you In advance.

You have an array containing 1 object. stringify turns this object into a string - you need it parsed so you can use it.
(I'm not sure if the object is parsed already, so to cover all bases, we'll parse it)
var Jsoninvoice = JSON.parse(data);
alert(Jsoninvoice[0].VATRate);
You have to specify the arrays index before you can access the properties.

It is already json object and stringify is not needed as #tymJV said you need to parse it if it is returned as string, just you need to access array item, as it is an array:
alert(data[0].VATRate)
SEE FIDDLE

You could use $.parseJSON(YOURJSON), and then use the keys to pull the data. Since it's in an array, you'll have to use [0] to pull the first item in the array (ie: your data).
Example
$(document).ready(function(){
var j ='[{"ErrorMessage":"","ID":294,"ExpenseID":0,"EffectiveDate":"/Date(1262284200000)/","FormattedEffectiveDate":"01-01-2010","Perunit":null,"VATRate":17.5,"ChangedByID":1,"ChangedByName":"superuser, superuser","Expense":null,"ErrorSummary":null,"ErrorList":[]}]';
var json = $.parseJSON(j);
alert("VATRate: "+json[0].VATRate);
});
Fiddle for reference

Retrieve JSON Array element value

My web service returned a JSON Array (ie. [{"key":"value"}, {"key":"value2"}]). In the array there are two items as you can see, which are separated with comma. I want to know how can I access the second item, and get the value of "key" for the second item.
I've tried:
var a = msg.d[1].key
With no success of course.
This is the returned string:
"[{"Code":"000000","Name":"Black","Id":9},{"Code":"BF2C2C","Name":"Red","Id":11}]"
The string was extracted using FireBug after watching the msg.d.
Need your help in solving this.

msg[1].key
Assuming that the name of that array is msg. I'm not sure what you are using .d for.
If msg.d is a string representing an array, use JSON.parse.
JSON.parse(msg.d)[1].key
You can replace key with the key you are wanting, e.g. Code, Name, Id, etc.

This works as expected for me.
var msg = [{"key":"value"}, {"key":"value2"}];
var a = msg[1].key;
What is msg in the example above? Need more info to help.

If msg.d is a string then you have to eval (uggh) or parse it before applying the array subscript.