JavaScript Operator: conditional
[this page | pdf | back links]
In JavaScript,
the conditional operator is
the (ternary) operator that selects between two possible expressions to
evaluate depending on whether an expression is true
or false.
For example, var3 = (boolval) ? var1 : var2 results
in var3 being set equal to var1 if boolval
is true, otherwise var3 is set equal to var2.
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>table,th,tr,td {border: 1px solid black;
border-collapse: collapse;}</style>
</head>
<body>
<table>
<tr>
<th>Example</th>
<th>Resulting value of <code>x</code></th>
</tr>
<tr>
<td><code id="Conditional1Example"></code></td>
<td><code id="Conditional1"></code></td>
</tr>
<tr>
<td><code id="Conditional2Example"></code></td>
<td><code id="Conditional2"></code></td>
</tr>
</table>
<script>
document.getElementById("Conditional1Example").innerHTML =
'var x = (5>3) ? 4+3 : 4-3;';
document.getElementById("Conditional1").innerHTML
= (5>3) ? 4+3 : 4-3;
document.getElementById("Conditional2Example").innerHTML =
'var x = (5<3) ? 4+3 : 4-3;';
document.getElementById("Conditional2").innerHTML
= (5<3) ? 4+3 : 4-3;
</script>
</body>
</html>
|
NAVIGATION LINKS
Contents | Prev | Next | JavaScript Operators