Operator spacing and unclosed quotes

1-js/02-first-steps/16-javascript-specials/article.md

@@ -216,7 +216,7 @@ switch (age) {
     alert("Won't work"); // the result of prompt is a string, not a number
 
   case "18":
-    alert("This works!"");
+    alert("This works!");
     break;
 
   default:
@@ -273,7 +273,7 @@ We covered three ways to create a function in JavaScript:
 
 
 - Functions may have local variables: those declared inside its body. Such variables are only visible inside the function.
-- Parameters can have default values: `function sum(a=1, b=2) {...}`.
+- Parameters can have default values: `function sum(a = 1, b = 2) {...}`.
 - Functions always return something. If there's no `return` statement, then the result is `undefined`.