Javascript Functions


Javascript Functions


Learn How To Create Functions in Javascript.
Javascript Function are of Four Types :-

a. No Argument With No Return Type
b.No Argument With Return Type
c.Argument With No Return type
d.Argument With return Type

Now Lets Start.

Example of function :-

function hello() // create function hello
{
//body and scope of function
}


1. No Argument With No Return Type

Code : -

<html>
<head>
<script>

function hello() // Create a function hello with no argument
{
console.log( “Calling Function hello”);
}

hello(); // Calling Function hello
// Output : Calling Function Hello in Your Console By Clicking On F12
</script>
</head>
<body>
<h2>Javascript Functions Tutorial</h2>
</body>
</html>

2. No Argument With Return Type

Code : -

<html>
<head>
<script>

function hello() // Create a function hello with no argument
{
var str=“Calling Function hello”;
return str; // Return Value
}

var srt1=hello(); // Calling Function hello Here We Use Echo To Print
console.log(str1); //Because it Only Return Value Not Print it
// Output : Calling Function Hello
</script>
</head>
<body>
<h2>Javascript Functions Tutorial</h2>
</body>
</html>

3. Argument With No Return Type

Code : -

<html>
<head>
<script>

function hello(a) // Create a function hello with argument
{
console.log(a); // Print Value
}

var ab=”hello test”;

hello(ab); // Calling Function hello With Parameter ab
// Output : hello test
</script>
</head>
<body>
<h2>Javascript Functions Tutorial</h2>
</body>
</html>

4. Argument With Return Type

Code : -

<html>
<head>
<script>

function hello(a) // Create a function hello with argument
{
var a=a.toLocaleUpperCase(a);
return a; // Return Value
}

var ab=”hello test”;

var out=hello(ab); // Calling Function hello With Parameter ab
console.log(out); // Output : Hello test Here first letter of word is capital
</script>
</head>
<body>
<h2>Javascript Functions Tutorial</h2>
</body>
</html>
Thank You
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