adding ternary operator along with example

README.md

@@ -568,9 +568,27 @@
 
 
 
-## Comparison Operators & Equality
+## Comparison Operators , Conditional (Ternary) Operators & Equality
 
   - Use `===` and `!==` over `==` and `!=`.
+  - Conditional operators is frequently used as shortcut for if statement and takes three operands.
+   ```javascript
+     condition ? expr1 : expr2 
+    ```
+  - If condition is true, the operator returns the value of expr1; otherwise, it returns the value of expr2.
+    ```javascript
+    //without ternary operator
+      var now = new Date();
+      var greeting = "Good";
+      if (now.getHours() > 17)
+        greeting += " evening.";
+      else
+        greeting += " day.";
+
+    //with ternary operator
+      var now = new Date();
+      var greeting = "Good" + ((now.getHours() > 17) ? " evening." : " day.");
+    ```
   - Comparison operators are evaluated using coercion with the `ToBoolean` method and always follow these simple rules:
 
     + **Objects** evaluate to **true**
@@ -609,6 +627,30 @@
     if (collection.length) {
       // ...stuff...
     }
+
+    // good
+    var superpower = isSuperman(user) ? 'flight' : 'none';
+    // bad
+    for (var i = 1; i <= 16; i++) {
+      var msg = i % 3 === 0 ? i % 5 === 0 ? 'FizzBuzz' : 'Fizz' : i % 5 === 0 ? 'Buzz' : '';
+      console.log(msg || i);
+    }
+
+    // good
+   for (var i = 1; i <= 16; i++) {
+     var msg = '';
+    if (i % 3 === 0) {
+     if (i % 5 === 0 {
+       msg = 'FizzBuzz';
+      } else {
+      msg = 'Fizz';
+      }
+    } else if (i % 5 === 0) {
+    msg = 'Buzz'
+  } 
+    console.log(msg || i);
+  }
+
     ```
 
   - For more information see [Truth Equality and JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/#more-2108) by Angus Croll.