What is ++a is a=6

Question

I lose too much point there

Answer 1

if a = 6 and you do ++a, a becomes 7. If you can post the entire question, that would be better. There might be a catch somewhere.

Answer 2

I'm not good at JS syntax, sorry if I do some mistakes.

e.g.

a = 6;
document.write(++a);

// outputs 7

a = 6;
document.write(a++);

// outputs 6

This is because a++ (post increment) uses value of var first before incrementing. While ++a increment value of var first before using it.

Answer 3

++a/--a is pre-increment, it immediately modifies the value of a before using it (if required) in the statement.
a++/a-- is post-increment, it only modifies the value after using it (if required) in the statement.

Answer 4

got it 😃😃😃 awesome. no need for Google. thanks for refreshing my memory

Answer 5

why about a++