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Functions Returning Values In Java Script

Function is a set of statements recognized by a name and can be used as and when required (it is reusable).

A function can accept parameters and can return a value back to the calling position. The parameters accepted by a function can be used in the code of that function.

 
Syntax:
 
function functionname(var1, var2,..)

{

lines to be kept under this name return(variablename)

}

 
Example:
 
<html>

<head>

</head>

<body>

<script type=”text/javascript”>

function max(m)

{

var x,y

y=m[0];

for(x=0;x<m.length;x++)

{

if(m[x]>y)

{

y=m[x]

}

}

return(y)

}

var m=new Array()

m[0]=50

m[1]=12

m[2]=99

m[3]=45

m[4]=120

m[5]=110

m[6]=22

m[7]=106

i=max(m)

document.write(“Maximum Value is “+i)

</script>

</body>

</html>

 
Understanding program:
An array is passed to the function and the greatest value is searched in the array and returned back, at calling position a provision to keep the returned value is kept in form of a variable, means whatever value the function will return, will be kept in i variable.

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