Miscellaneous Operator
We will discuss two operators here that are quite useful in JavaScript: theconditional operator (? 🙂 and the typeof operator.
Conditional Operator (? 🙂
The conditional operator first evaluates an expression for a true or false value and then executes one of the two given statements depending upon the result of the evaluation.
| Sr.No | Operator and Description |
|---|---|
| 1 | ? : (Conditional ) If Condition is true? Then value X : Otherwise value Y |
Example
Try the following code to understand how the Conditional Operator works in JavaScript.
<html> <body> <script type="text/javascript"> <!-- var a = 10; var b = 20; var linebreak = "<br />"; document.write ("((a > b) ? 100 : 200) => "); result = (a > b) ? 100 : 200; document.write(result); document.write(linebreak); document.write ("((a < b) ? 100 : 200) => "); result = (a < b) ? 100 : 200; document.write(result); document.write(linebreak); //--> </script> <p>Set the variables to different values and different operators and then try...</p> </body> </html>
Output
((a > b) ? 100 : 200) => 200 ((a < b) ? 100 : 200) => 100 Set the variables to different values and different operators and then try...
