Returning a value, PHP Web Programming

Assignment Help:

Another function of a function is to return a value. Imagine we have the following function:

<HTML>

<HEAD>

<TITLE>IGNOU </TITLE>

<SCRIPT Language = "JavaScript">

function calculate(a,b,c)

{

d = (a+b) * c;

return d;

}

</SCRIPT>

</HEAD>

<BODY>

<SCRIPT Language = "JavaScript">

var x = calculate(4,5,9);

var y = calculate((x/3),3,5);

alert('calculate(4,5,9) = ' +x + ' and ' + ' calculate((x/3),3,5) = ' + y);

</SCRIPT>

</BODY>

</HTML>

 

322_Returning a value.png

Figure:  Using a Function that Returns a Value

The function illustrated in Figure calculates a number from the numbers you pass to it. While this is done it returns the result of the calculation. The function passes the result back to the function which called it. While the function executes return statement, control goes back to the calling program without executing any more code in function, if there is any.

The calling of the function is done via the following two statements in the figure:

var x = calculate(4,5,9);

var y = calculate((x/3),3,5);

This means that you have declared variable x and are telling JavaScript to execute calculate ( ) along the arguments 4, 5 & 9 and to put the returned value (81) in x. After that you declare a variable y and execute calculate ( ) again. The first argument is x/3, which means 81/3 = 27, thus y becomes 150.Certainly you can also return strings or even Boolean values (true or false). While using JavaScript in forms, you can write a function which returns either false or true and therefore tells the browser whether to submit form or not.


Related Discussions:- Returning a value

Explain the characteristics of a well-formed xml document, Question: (a...

Question: (a) "XML is about the structure of data; this is what makes it so much more powerful than HTML which is about the presentation of data." Show this statement. (b)

Thead - tbody - tfoot, mentions that a group of rows are the header rows at...

mentions that a group of rows are the header rows at the top of the table. specify that a group of rows are body rows. specify that a grou

Need help for turn a paper form into an html5 form, Need help for Turn a pa...

Need help for Turn a paper form into an HTML5 form I have a paper order-sheet that desires to be transformed into a responsive html5 form that submits to order.do.php. The field

We are seeking an experienced web developer, We are seeking an experienced ...

We are seeking an experienced web developer with the following skills- a) Front-end development (HTML5/CSS3) b) Front-end scripting and common libraries (Javascript, JQuery)

We are in need of javascript programmer, We are in need of JavaScript progr...

We are in need of JavaScript programmer We want a JavaScript based program to communicate with a digital sensor and memory system via Bluetooth. Programmer must as well be able

Local area network, It is a privately - owned computer networks confined to...

It is a privately - owned computer networks confined to small geographical area, like an office or a factory extensively used to connect office PCs to share information & resources

I want a video player thumbnail script, Video player/thumbnail swap-out scr...

Video player/thumbnail swap-out script needed I want a video player thumbnail script. There will be one big, main video, adjacent to either three or four thumbnails of other vid

Need help in google map interface, Need help in Google map interface Sum...

Need help in Google map interface Summary- Highpoint streets on Google maps using colours that depend on the score those streets receive in my data Details: I want to map fiv

Want help in website creation, Website creation I would like to get an c...

Website creation I would like to get an concept of price if I ask you to create a simple website with wordpress, Job description- WORDPRESS Web development project type- New

I need help to move hosting, Move Hosting To Google hosting where I am c...

Move Hosting To Google hosting where I am capable to host for free. There is a way to host on Google for free if you do not have too much traffic. You will need to back up the

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd