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Error Handling in javascript

ErrorHandling.js

@@ -0,0 +1,20 @@
+ function greet_user(user) {
+        console.log('Hi ' + user.name + ', how are you?');
+    }
+
+    var user = {
+        'name': ""
+    }
+
+    try {
+
+        if (!user.name) {
+            throw 'Name is empty';
+        } 
+
+        greet_user(user);
+
+    } catch (err) {
+        console.log(err);
+        console.log('Hi guest user, how are you?');
+    }