Introduction
The ternary conditional operator(?) is not a statement but it creates conditional logic. It is used to assign a certain value to a variable based on a condition.
It will return the value on the left of the colon ( : ) if the expression is true, and return the value on the right of the colon if the expression is false.
TypeScript ternary operators take three operands.
Syntax
| condition ? result1 : result2; |
The following example shows how to use a ternary condition operator in TypeScript.
Step 1
Open Visual Studio 2012 and click "File" -> "New" -> "Project...". A window is opened. In this window, click HTML Application for TypeScript under Visual C#.
Provide the name of your application as "Ternary_Operator" and then click "Ok".
Step 2
After this session the project has been created; a new window is opened on the right side. This window is called the Solution Explorer. The Solution Explorer contains the ts file, js file and css files.
Coding
ternary_operator.ts
|
class ternary_operator
{
condition()
{
var first = 5;
var second = 3;
var result = (first > second) ? "That is true : 5>3" : "That is false : 5<3";
alert(result);
}
}
window.onload = () =>
{
var obj = new ternary_operator();
obj.condition();
}; |
ternaryoperatot_Demo.htm
|
<!DOCTYPEhtml>
<htmllang="en"xmlns="http://www.w3.org/1999/xhtml">
<head>
<metacharset="utf-8"/>
<title>Ternary operator</title>
<linkrel="stylesheet"href="app.css"type="text/css"/>
<scriptsrc="app.js"></script>
</head>
<body>
<h2>Ternary Condition Operator in TypeScript</h2>
<divid="content"/>
</body>
</html> |
app.js
|
var ternary_operator = (function () {
function ternary_operator() { }
ternary_operator.prototype.condition = function () {
var first = 5;
var second = 3;
var result = (first > second) ? "That is true : 5>3" : "That is false : 5<3";
alert(result);
};
return ternary_operator;
})();
window.onload = function () {
var obj = new ternary_operator();
obj.condition();
};
//@ sourceMappingURL=app.js.map |
Output
![ternary-operator.jpg]()
Reference By
http://www.typescriptlang.org/