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JavaScript Function with Parameters or Arguments



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A function with parameters or arguments accepts some values when it is called. Basically arguments are the values that you pass to a function, which has corresponding parameters to store them.

Note - Arguments are passed while calling a function.

JavaScript Function Parameters/Arguments Example

Here is an example demonstrates function arguments/parameters in JavaScript:

<!DOCTYPE HTML>
<html>
<head>
	<title>JavaScript Function Parameters/Arguments</title>
	<script type="text/javascript">
		function myfun(val)
		{
			alert(val);
		}
	</script>
</head>
<body>

<h3>JavaScript Function Parameters/Arguments Example</h3>
<form>
	<input type="button" value="Call Function"
	onclick="myfun('Welcome to JavaScript function with parameter/argument.')">
</form>

</body>
</html>

Here is the sample output of the above JavaScript function with parameter/argument example. This is initial output:

javascript function parameters

This is the output produced after pressing Call Function button:

javascript function arguments

Here is the live demo output produced by the above JavaScript functions with parameters or arguments example program.

Let's take one more example on function arguments/parameters in JavaScript:

<!DOCTYPE HTML>
<html>
<head>
	<title>JavaScript Function Parameters/Arguments</title>
</head>
<body>

<h3>JavaScript Function Parameters/Arguments Example</h3>
<script type="text/javascript">
	function calsum(val1, val2, val3)
	{
		var sum = val1 + val2 + val3;
		document.write("Total = " + sum);
	}
	document.write("Here the sum is calculated by passing arguments to the function named calsum<br/>");
	calsum(10, 20, 30);
</script>

</body>
</html>

Here is the sample output of the above JavaScript function arguments/parameters example:

javascript function parameters arguments example

Following is the live demo output of the above functions with parameters example in JavaScript.


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