Increment operator (++) & decrement operator (--).

Question

Please help me friends to understand the basics of increment operator (++) & decrement operator (--).
Any reply is appreciated .

Answer 1

@Alejandro gave a proper explanation.

let me give you an example which will clear it out:
var x = 0;
var y;
y = x++; //here y is 0 and x is 1 //first assign then increment

var x = 0;
var y;
y = ++x; //here y is 1 and x is 1 //first increment then assign

Same is the case with --x and x--

Answer 2

Because I guess statement y = x++ will be interpreted as
y = x;
x = x+1;
&
y = ++x as
x = x+1;
y=x;

By Javascript interpretor.

Answer 3

var++ is equal to var=var+1;
You could have pre increment, ++var this increments the variable first, before the line executes... And post increment, that increments the variable after the line execution.
Same happens with -- just with the difference that you are substracting

Answer 4

but y = x++ shouldn't be y = x + 1 first which will be 1 ????
because if i do understand x++ means x = x + 1 ???
Thanks for replying

Answer 5

that was awesome and clear enough please let's turn ti (--)
thanks for helping