[DUPLICATE] Help me to understand Increment and Decrement In javascript

Question

Please, help me To understand the pre and post increment and decrement in JavaScript. And please, explain what the differences between ++i, i++ and how I will use that. Thanks, A lot.

[ Please, only answer for JavaScript]

Answer 1

https://www.sololearn.com/Discuss/98959/?ref=app

The prefix and postfix definitions / operation are the same between languages.

This answer by https://www.sololearn.com/Profile/2476881/?ref=app would apply equally.
_____
++x increments the value of x and then returns x
x++ returns the value of x and then increments

for example:

int a=0;
cout << a++;
// var a=0;
// console.log(a++);

the output will be still 0, as it uses the value of a and only then adds 1. But if we look at the following example:

int b=0;
cout << ++b;
//var b=0;
//console.log(++b);

the output will be 1, as it adds 1 before using the value of b... but after both codes will be executed, the value of a and b will be 1.