Postfix AND Prefix increment and decrement in Javascript

By: Prof. Fazal Rehman Shamil						

Last modified on October 8th, 2019			

Postfix AND Prefix increment and decrement in Javascript

Postfix AND Prefix increment and decrement in Javascript is the today topic of discussion in this tutorial.

Algorithm of Postfix AND Prefix increment and decrement in Javascript

START

Step 1 → Take variable Q,W,E,T

Step 2 → PRE INCREMENT Q

Step 5 → POST INCREMENT W

Step 6 → PRE DECREMENT E

Step 7 → POST INCREMENT T

Step 8→ SHOW THE RESULT

STOP

Program of Postfix AND Prefix increment and decrement in Javascript

Lets see a basic program of Program of Postfix AND Prefix increment and decrement in Javascript.

<html>
<head>
<title> javascript prefix and Postfix </title>
</head>
<body>
<script>
var Q = 10, W = 20, E = 5, T= 4;
document.write("<b>PREFIX INCREMENT </b>");
document.write("<br \> Value of Q: " + Q); 
document.write("<br \> Value of Q : "+ (++Q)); 
document.write("<br \> <b>----POSTFIX INCREMENT</b>");
document.write("<br \> Value of W : "+ W); 
document.write("<br \> Value of W : "+ W++); 
document.write("<br \> <b>----PREFIX DECREMENT </b>");
document.write("<br \> Value of E : "+ E); 
document.write("<br \> Value of E : "+ --E);
document.write("<br \> <b>----POST DECREMENT</b>");
document.write("<br \> Value of T : "+ T); 
document.write("<br \> Value of T : "+ T--); 
</script>
</body>
</html>

<html>

<head>

<title> javascript prefix and Postfix </title>

</head>

<body>

var Q = 10, W = 20, E = 5, T= 4;

document.write("PREFIX INCREMENT ");

document.write(" Value of Q: " + Q);

document.write(" Value of Q : "+ (++Q));

document.write(" ----POSTFIX INCREMENT");

document.write(" Value of W : "+ W);

document.write(" Value of W : "+ W++);

document.write(" ----PREFIX DECREMENT ");

document.write(" Value of E : "+ E);

document.write(" Value of E : "+ --E);

document.write(" ----POST DECREMENT");

document.write(" Value of T : "+ T);

document.write(" Value of T : "+ T--);

</script>

</body>

</html>

Output

PREFIX INCREMENT

Value of Q:10

Value of Q:11

—-POSTFIX INCREMENT

Value of W:20

—-PREFIX DECREMENT

Value of E:5

Value of E:4

—-POST DECREMENT

Value of T:4

Author
Recent Posts

Prof. Fazal Rehman Shamil

CEO @ T4Tutorials.com
I welcome to all of you if you want to discuss about any topic. Researchers, teachers and students are allowed to use the content for non commercial offline purpose. Further, You must use the reference of the website, if you want to use the partial content for research purpose.

Latest posts by Prof. Fazal Rehman Shamil (see all)

How to write a resume for a job search: Tips for applicants - May 11, 2021
The Best Tool to Test the Speed of Your Internet - May 5, 2021
Why do we need various number systems in computer science? - April 16, 2021