Miscellaneous Operator
We will discuss two operators here that are quite useful in JavaScript: the conditional operator (? :) and the typeof operator.
Syntax
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.
1. ? : (Conditional)
If Condition is true? Then value X : Otherwise value Y
Example
<html>
<body>
<h1>Conditional Operator (? :)</h1><br/>
<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...
0 comments
Post a Comment