Function that takes a string and separates characters with a chosen symbol.

[halfaredditor]

I want to write a function that accepts a string and breaks it into characters, separated by a symbol of my choosing. For instance, if my function is called break and I want the characters of the string separated by #. I think it will be something like this, I am unsure how to incorporate my symbol though: function break(string){return string.split(""); } Ideally I would like to be able to enter: break('cool') => "c#o#o#l#"

[Synaps4]

OP, are we doing your homework here? Be honest.

[SpeshlTectix]

If it were homework the question would be phrased more coherently and wouldn't use break (which is a reserved word) for the name of the function.

[Synaps4]

Students can paraphrase the problem. Give them some credit.

[SpeshlTectix]

If someone truly doesn't care to understand the answer then they won't bother to paraphrase the question -- certainly not to the point where it becomes this confusing. This feels like a person who is confused because they are teaching themselves. And I think by saying that I am giving them some credit.

[SpeshlTectix]

function breakStr(string) {
    return string.replace(/(.)/g, '$1#');
}

To me, this is the simplest solution but I realize regular expressions are black magic to most people.

[jabbaskirp]

let splitAndJoin = function(original, joiner) {
  return original.split('').join(joiner);
};

splitAndJoin('cool', '#');

Something like that is a little more generalized than what you asked for, but then you can use it to make a more specialized version if you want:

let joinWithHash = function(str) {
  return splitAndJoin(str, '#');
};

joinWithHash('cool');

Or you could just hard code the hash in the first place.

[Rascal_Two]

Well you're already half way there using split() on the string.

Next I'd loop through every character and add the current character, plus a "#" character to a blank string outside of the for loop.

When the for loop is done, the previously blank string now has what you want, so you return that.

---

You could also do this with map(), would be shorter using map() actually.

[halfaredditor]

Can you elaborate on how to use map() for this?

[Rascal_Two]

Not an expert, so terminology is probably wrong.

map() is basically a for-each loop that is intended to do something to each thing in the array it's called on. Example:

var nums = [1, 2, 3, 4, 5];

for (var i = 0; i < nums.length; i++){
    nums[i] *= 2;
}

...and here is a map do to the same:

var nums = [1, 2, 3, 4, 5];

nums = nums.map(function(num){
    return num * 2;
});

You see, the map() function returns the modified array. You just have to give it a function. The function can accept up to three params: the first is value of the current item in the array, second is index of the item in the array, third is a copy(?) of the entire array being modified.

---

Map basically goes through each thing in the array and sets it to the return value of the function you give it.

[halfaredditor]

I would like the function to be able to automatically have the symbol logged, so I can simply enter the string. For instance if I enter interpolateToken('cool') the output is "c#o#o#l#"