diff --git a/fizz_buzz.js b/fizz_buzz.js
new file mode 100644
index 0000000000000..785775007e6e9
--- /dev/null
+++ b/fizz_buzz.js
@@ -0,0 +1,19 @@
+function fizzbuzz (n) {
+    var returns=[];
+    var param=Number(n);
+    var i=1;
+  for( i=1;i<=param;i++){
+      if(i%15===0){
+          returns.push("FizzBuzz");
+      }else if(i%3===0){
+          returns.push("Fizz");
+      }
+      else if(i%5===0){
+          returns.push("Buzz");
+      }
+      else {
+          returns.push(i);
+      }
+ 　}
+ 　return returns;
+}
\ No newline at end of file
diff --git a/prime_numbers.js b/prime_numbers.js
new file mode 100644
index 0000000000000..16460e8aba92c
--- /dev/null
+++ b/prime_numbers.js
@@ -0,0 +1,17 @@
+function isPrime (n) {
+   var param=Number(n);
+       if(param===1){
+           return false;
+       }
+       if(param===2){
+           return true;
+       }
+       if(param%2===0){
+           return false;
+       }
+       for(var i=3;i<= Math.sqrt(param);i+=2){
+           if(param%i===0)
+           return false;
+       }
+   return true;
+}
\ No newline at end of file