up vote 0 down vote favorite

I have a rather specific problem.

I'm using ng-csv, and because it doesn't support nested arrays, I'm turning an array into a string.

Something like this:

[
 {"name":"Maria","chosen":false},
 {"name":"Jenny","chosen":false},
 {"name":"Ben","chosen":false},
 {"name":"Morris","chosen":false}
]

Turns into: 

$scope.var = "Maria, Jenny, Ben, Morris"

My problem is that when I was using the array I was able to count the number of names in the array (which I need for UI reasons), but with the string it gets tricky.

Basically, I cannot count the number of words because some names might include last name, but I thought I could count commas, and then add 1.

Any pointers on how to do just that?

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commas = str.length - str.replace(/,/g, "").length; – Alex K. Dec 22 '14 at 18:41
up vote 2 down vote accepted

If you need names itself - you may use method split of String class:

var str = "Maria, Jenny, Ben, Morris";
var arr = str.split(','); // ["Maria", " Jenny", " Ben", " Morris"]
var count = arr.length; // 4
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I guess I can't NOT upvote your solution. :) – rchang Dec 22 '14 at 18:45
    
Thanks to your solution I realized I can count names before converting the array I already had to string : ) – Eric Mitjans Dec 22 '14 at 19:07
up vote 2 down vote 
var str = "Maria, Jenny, Ben, Morris";
var tokens = str.split(",");

The number of tokens should be captured in tokens.length. Alternately, if you don't actually need to work with the tokens directly:

var nameCount = str.split(",").length;
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up vote 0 down vote

Why not use regex?

var _string = "Mary, Joe, George, Donald";

_string.match(/,/g).length // 3
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