I want to know briefly the concept of i++ a d i-- with examples plz

Question

give some examples of pyramids explaining use of i++,j++,i--&j--

Answer 1

i++ (or whatever other character or string that you set as a variable) is the same to increment by 1 its value.

For example, in JS:

var m = 5;
alert(m);
m++;
alert(m)

Will return:

5
6

The -- operator does same thing but decrements instead of increments (following the previous example: >>> 5, >>> 4