Add method join

Author: AndriiKot

app9.js

@@ -0,0 +1,9 @@
+const arrName = ['Andrii','Roma','Dima'];
+const stringName = arrName.slice();
+
+console.log(arrName);             // ['Andrii','Roma','Dima']
+console.log(stringName.join());   // Andrii,Roma,Dima
+console.log(stringName.join(''))  // AndriiRomaDima
+console.log(stringName.join(' ')) // Andrii Roma Dima
+
+