Increment and decrement confusion...

Question

a = 5;
b = 6;
a = b++;
c = ++a;

document.write(a+c);
//output : 14 ? why : not 13?

Answer 1

a = 5
b = 6
a = b++ (a = 6, b = 7)
c = ++a (c = 7, a = 7)
a + c = 14

If the plus signs are before the varible then it adds one before considering the rest of the equasion, if it is after, it adds one after the equation is done

Answer 2

a=b++
a=6
c=++a
c=7 and a=7 as well

Answer 3

After a=b++;
A becomes 6 and b becomes 7
After c=++a;
A becomes 7 before assigning value to c, so c is 7 too. (7+7=14)

Answer 4

Thank you very much Brain & Bones Abhay Aleksei Radchenkov