index.js

/* This is my code library. I have used the underscore/lowdash convention of using the underscore for naming ease. I am using the module pattern so any of these functions can be invoked using _.function_name();*/

var _ = (function(){

// this contains functions that will be exposed to the outer enviornment
var public_api = {
    add: add,
    adder:adder,
    fizzBuzz : fizzBuzz,
    fizzBuzzPlus:fizzBuzzPlus,
    loopingTriangle : loopingTriangle,
    loopingTrianglePlus: loopingTrianglePlus,
    reverseTriangle : reverseTriangle,
    reverseTrianglePlus : reverseTrianglePlus

}

//simple add function _.add(x , y)
    function add(x, y){
        return x + y;
    }

//_.adder(x) function allow closure of the first paramater
    function adder(x){
        function add(y){
            return x + y;
        }
        return add;
    }
//_.fizzBizz
    function fizzBuzz(){
        var out = "";
        var length = 100;
        for (var i = 0; i < length; i++){
            var j = i + 1;
            out = "";
            if(j % 3 === 0){
                out = "fizz";
            }
            if(j % 5 === 0){
                out = out + "Buzz";
            }

            console.log(out || j);
        }
    }

/*_.fizzBizzPlus optional parameters length = how many number you want to test, fizz and buzz are the numbers you want each to be divisible by.*/
    function fizzBuzzPlus(length, fizz, buzz){
        var out = "";
        for (var i = 0; i < (length || 100); i++){
            var j = i + 1;
            out = "";
            if(j % (fizz || 3) === 0){
                out = "fizz";
            }
            if(j % (buzz || 5) === 0){
                out = out + "Buzz";
            }

            console.log(out || j);
        }
    }

/* prints a triangle of #*/
    function loopingTriangle(){
        var hash = "#";
        var out = "";

        for (var i = 0; i < 6; i++){
            out = out + hash;
            console.log(out);
        }

    }

/* adds optional height and character parameters to control triangle height and the string that builds the triangle */
    function loopingTrianglePlus(height , string){
        var hash = (string || "#");
        var out = "";

        for (var i = 0; i < (height || 6); i++){
            out = out + hash;
            console.log(out);
        }

    }
/* like looping triangle but in reverse, with spaces on the left and hashes on the right*/
    function reverseTriangle(){
           var height = 6;
           var hash ="#";
           var blank = " ";
           var hashArr = [];
           var blankArr = [];

           for(var i = 0; i < height; i++){
              if (i < 1) {
                  hashArr.push(hash);
              } else {
                  blankArr.push(blank);
              }
           }

           for (var i = 0; i < height; i++){
                console.log(blankArr.join("")+hashArr.join(""));
                hashArr.push(hash);
                blankArr.pop();
           }
       }
/* lets the user change the triangle height and character with high and string parameters*/
        function reverseTrianglePlus(high, string){
           var height = (high || 6);
           var hash =(string || "#");
           var blank = " ";
           var hashArr = [];
           var blankArr = [];

           for(var i = 0; i < height; i++){
              if (i < 1) {
                  hashArr.push(hash);
              } else {
                  blankArr.push(blank);
              }
           }

           for (var i = 0; i < height; i++){
                console.log(blankArr.join("")+hashArr.join(""));
                hashArr.push(hash);
                blankArr.pop();
           }
       }


return public_api;

})();