add javascript solutions for 412

Author: limbowandering

solution/412.Fizz Buzz/Solution.js

@@ -0,0 +1,10 @@
+const fizzBuzz = function(n){
+  let arr = [];
+  for(let i = 1; i <= n; i++){
+    if(i % 15 === 0) arr.push('FizzBuzz');
+    else if(i % 3 === 0) arr.push('Fizz');
+    else if(i % 5 === 0) arr.push('Buzz');
+    else arr.push(`${i}`);
+  }
+  return arr;
+};