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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