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

Urgent php enhancement to online assessment website, URGENT PHP enhancement...

URGENT PHP enhancement to online assessment website We are currently looking for a skilled PHP developer (PHP & MySQL - with cPanel website administration interface) with outsta

Need help for website update and enhancement using php, Need help for Websi...

Need help for Website update and enhancement using PHP and Mysql We're seeking for a long-term relationship with a web programmer/designer who is able to handle 5 to 10 hours of

Need website design and development for ecommerce, Need Website design and ...

Need Website design and development for ecommerce I would like a humble website designed and developed for ecommerce. I am vending a small range of bath, skincare and home fragr

Website development for nutrition company, Website Development for Nutritio...

Website Development for Nutrition Company We are in search of a developer with a strong skill set. We need to be sure the candidate can handle ecommerce, responsive site deve

Html password field, How do you define an HTML password field? Use type ...

How do you define an HTML password field? Use type = password for the form element. This provides a minimal level of visual privacy but the text is submitted in plain text.

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 to revamp an existing website, Website Designing Need help to ...

Website Designing Need help to revamp an existing website Job description: Need to change the look of an existing website so that it can have greater hits Web developme

Need help in jquery event calendar integration, Need help in JQuery Event C...

Need help in JQuery Event Calendar Integration w/Functionality, API Integration of BBB This module is about Integrating as well as Activating a JQuery Event Calendar as well as

I desire php help for bilingual website, I desire PHP help for BILINGUAL WE...

I desire PHP help for BILINGUAL WEBSITE We are in desire of a bilingual website that will have an online store and information about the designer of the product. Our product is

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